Stumped with rear shock length..??????

Thanks. I've done the monroe thing and got it cased. I really wanted some adjustability but these Monroe's will have to do. Picked some up today.

Anyone have experience with comp engineering shocks

Decent, budget race shock... Front's & rears are multi adjustable, aren't fantastic but get the job done...( basic 10-12 hot rods..IMO..) You order these,already preset compression & travel lengths.. It boils down to: What shock/vehicle dimensions,did you "case too"... Mods might be needed,to fit the stock type length Comp shocks...
P.S.: I take it the Rancho 9000 series shocks( they were the adjustable shocks, designed with Cal Tracs as a system..),are unaffordable ,or unavailable?!?!?....