try an R-body

gran fury,diplomat,mid-80s wagon

what ends are on the stock shock?2 eyeloops? or 1eyeloop and a stud/nut (bayonet style)

I allways buy them for a B-body and get the ones that have the sleeve over the air bag(highjackers)

you can get a set of overload shocks that have a coil spring on them also,they would work nice with out the hassel of air lines

you could try the bolt on overload springs from JC-W that clamp on the rear of the leaf spring,I see them a lot on the 5th ave,s,probly JC-W also

I have had good luck with napa finding the coilover shocks and air shocks