Hi guys,
I bought a 10 bolt that came out of a 66 442 and it's going into a 67 Cutlass (orig a 12 bolt).
I assumed it would be a sraight up swap , but I'm reading stuff in the forum that the spring perches and driveshaft might need work ?
I'm confused ...can anybody clarify ?

 

If it is truely a 66 rear the lower springs/perches are different than a 67. To use you would need the 66 springs. I do not think you will have a driveshaft problem.