1967 Dart 7 1/4 rear going to 8 3/4.

[wedgerulesstreet]

Hello Everyone. I am trying to get an 8 3/4 posi in my 1967 Dart w/400 engine.(was a six). I spotted one but the front gear holder (pinion to driveshaft) looks big and box like? Brake backing plate on my 7 1/4 is 52 inch and spring plates center to center is 41". I told seller to measure his unit. Can I use this rear if I got a different driveshaft? Is there a better rear to use and not need a shaft?  this rear out of I think an aspen wrong for my car? Thanks in advance for any help. Wayne

[Jim_Lusk]

Well, no Aspen ever left the factory with an 8-3/4.........

[wedgerulesstreet]

Thanks for that info on Aspen. I am new to this so sorry if I do not answer well. I would add picture of my car if I knew how. The rear I am looking at was in an aspen with 360 and 727 trans? Was it a car someone built? strange thing is rear has this look like the input shaft is a rectangular box? and guy measures different than me. he wants $400.00 and that could go up. I have seen some cars (Barricuda) with 9 inch Ford rear. This is low budget so any way to save money will help. I am selling my gts hood to get some cash for this.

[Jim_Lusk]

You can post pics after ten posts.

Post pics of the rear after your tenth post and somebody will know what it is.