There are rear shock relocator kits available from various vendors...see...
http://www.lmctruck.com/icatalog/cb/full.aspx?Page=64
A 4" rear drop may also need shorter shocks....see...
http://www.lmctruck.com/icatalog/cb/full.aspx?Page=65
Also...front shocks should also have top bolt reinforcing kits added...see...
http://www.lmctruck.com/icatalog/cb/full.aspx?Page=61
I dont work for LMC...I just find their catalogs easier to use and digitally search thru...
