Like many others I prefer a truck to have much less ground clearance than General Motors intended, the first stage of this job is simple replace the rear springs. I am located in Australia so it’s easier for me to source local parts if they will do the job, my choice of rear coils came from a Commodore utility think El- Camino version of a 2004 GTO (or google 04 Holden Ute) this gave me about a 6 or 7 inch drop, it’s hard to tell for sure as I suspect the truck had been raised with fwd springs I don’t know the factory standard height. With this done the shocks became useless you will see the problem this created in the attached image. Lowered is never low enough so its now getting a c-notch and 2 inch lowering blocks and while the bed is off I am fixing the shock absorber location issue. I had been researching this project for a while and came across lakeroadsters shock mount drawing. To find it use the link. https://talk.classicparts.com/threads/lakeroadsters-build-thread-65-swb-step.13928/page-3 I lack some of Lakeroadstes skills, check out his thread for extra information.