[Jerrybigbird]

Originally Posted by aggie91

Short answer is no. In reality, you do not even have to swap cross members. To get disc brakes, you just really only need to swap ball joints to match the spindle you are using and use a tie rod adapter sleeve to use the correct tie rod for the spindle you use.

The only difference between the cross members is the holes for the u-bolts that hold the lower arm in place. The later model uses a larger diameter u-bolt. If you are swapping to the later a-arms to get the rubber bushings versus the steel ones, then you can easily drill out those 8 holes to the correct size for the later model u-bolts. I think they are 9/16" dia...

Cool thanks