will a set a rear leaf springs off of an 89 bronco work on a 79 bronco? I have a set of 4 inch lift rear springs from an 89 bronco and I plan to put them on my 79 bronco, will they give 4 inches of lift on it also, it has the quad shock option and rear sway bar. Also will front coil springs from 80 and up broncos and pickups fit on a 79 bronco, will 4 inch lift springs from the later trucks still give 4 inches of lift on the 79, thanks.

 

I believe the 79 is a good bit heavier. If so, you're looking at immediate sag and axle wrap. Worth checking.