Rear End

How difficult is it to replace a pinion and a crown back?

I have a mustang 1989 which has a 1987 turbo coupe thunderbird and the trans was swapped from auto to manual. The rear end gear ratio is 3:73 and I want to leave at 3:45 a. I good mechanical skills but I'm more of a shade tree mechanic. I was just wondering how difficult it was for you to replace the ring and pinion and do you have any advice? The back is a "7.5.

Pretty straight forward for a person capable Mechanical - book search (Haynes or Chilton manual) to get the correct torque, bearing clearances, etc., and a good set of feeler gauges and a wrench.

MTD Transmission Transaxle Riding Mower Tractor Rear End 618 0002
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cub cadet rear end bushig seal kit replaces IH 384664 R2 70717273100102122
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74 John Deere 112 110 Rear End Transaxle Pinion Shaft  M41036
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74 John Deere 112 110 Rear End Transaxle Pinion Shaft Spur Gear  M41044
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74 John Deere 112 110 Rear End Transaxle Washers Spacers Thrust Bearings Race
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CASE 220 222 224 Tractor Transaxle Rearend Cover Plate 444 446 448
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CASE Ingersoll 220 222 224 Tractor Transaxle Rearend Cover Plate 444 446 448
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18HP MTD REAREND
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Cub Cadet HDS 2185 2165 Transmission Rear End part  618 3085A 918 3231
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Time Remaining: 7d 7h 40m
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Time Remaining: 7d 7h 49m
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John Deere 316 Rear End Transaxle Drive Pump Hydrostat
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Time Remaining: 8d 4h 23m
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Time Remaining: 8d 4h 35m
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JOHN DEERE 425 445 455 REAR END OIL FILL TUBE DIPSTICK FREE SHIPPIPNG
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Time Remaining: 8d 8h 29m
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Time Remaining: 8d 19h 40m
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MTD FARM KING 16HP REAR END
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Time Remaining: 9d 5h 12m
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FORD NEW HOLLAND LS35 KOHLER COMMAND CV15S REAR END BOLTS
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Allis Chalmers 716 Rear End Gear Case
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Time Remaining: 9d 9h 9m
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FORD LGT 145 165 HYDRO REAREND
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Time Remaining: 9d 9h 10m
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Genuine Snapper Rear End Plug pt  1 1024 NEW B5
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Time Remaining: 9d 13h 20m
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11HP BOLENS HYDRO REAREND AND 1 TIRE
11HP BOLENS HYDRO REAREND AND 1 TIRE
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Time Remaining: 10d 1h 43m
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JOHN DEERE R70 REAREND PEERLESS 165A
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JOHN DEERE 312 REAR END
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SIMPLICITY 4040 4041 9020 ALLIS CHALMERS REAR END FINAL DRIVE BEARING PLATE
SIMPLICITY 4040 4041 9020 ALLIS CHALMERS REAR END FINAL DRIVE BEARING PLATE
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CUB CADET 1250 1450 1650 HYDROSTATIC REAR END
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Time Remaining: 11d 7h 44m
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Time Remaining: 11d 8h 54m
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Allis Chalmers 716 Hydro Rear End Gears
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Time Remaining: 11d 9h 11m
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