i dunno but i just put 94-04 mustang shocks in the back of my tracker with roughly 3inches of lift. perfect fit, about 1.5inches longer than the crown vics. another guy in the 99+ section has used 90-95 4runner shocks, they are another inch longer again! i looked at the f150's from munroe, they looked huge so i didn't even bother trying them... you should be able to order the procomps for cheap also, get the part # from the boondox site. i would have gone this route had there not been a 10 day wait.