the doetsch tech shocks through summitt!!!! i've seen those in the online catologe i was thinking of buy them but they have very little detail like front/rear and what the two ends look like. if you have purchased these can you give me the proper part number so there is no mistake. also with these shorter shocks do i need to use a lowering block for the rear. also does that actually lower the truck anymore. i see ad's that use 4" drop springs for the rear and 2" blocks and they call it a 6" drop.