difference from earlie to late A bodies

I know if you use the stock uppers, you basically have to open the "hole" up where the coil over can rub inside the factory arm, and you have to make the lower control arm stay by bolting it in place or it will fall out. Ive thought about it, I just might do that this winter when I start my Dana 60 rear swap.

I have a lot of customer projects to finish up first though.