I have two Mastersbilts.... a 90's wide combo that was originally a leaf car now c/o and an '04 Smackdown. Both square tube.
I narrowed the rear frame rail (rightside) for more tire clearance. Mastersbilt offers a nice flat x member that can be used on either car ($200.00) and the right side frame rail can easily be raised with a 3' piece of 2" sq. tube.
There differences in the inner control arm mounts and the rear four bar mounts are different as well as the j bar mounts. The newer cars use different length a arms and four bar lengths are different, too.
Really not a lot when you sit the two next to eaxh other.
I'm going to install that new raised x member in my Smack and raise the right rail.
There are some good members here who can, and will, chime in, too.
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