Im new to this board so it this question has been asked, Im sorry.
I have a 69 Camaro with a stock rear subframe. The guy I bought it from told me the disc brake rear end was out of a 81 Firebird or Camaro, which I think is either 1/2" or and 1" wider per side. I have a set of Centerlines that are 10 1/2 wide from inside of bead to inside of bead. The guy that owns them said he thought they had 5 1/2 or 5 5 3/4 BS. Is it even worth trying ot bolt them on?? Modifying the lip isnt a big deal, I dont want to get into a rear frame work since the car is getting backhalved next winter.