Aside from the above mentioned brake lines, it'll bolt right in. I'm not sure off hand if the 4 cylinders had quad shocks (i don't think so) so keep that in mind.
My car, being an '85 should've had a 7.5, and to my knowledge the SSPs weren't upgraded in the rear ends, but it had an 8.8 in it when i got it so either they did upgrade it or the PO did.