hmm, i see what they are doing. the extender actually moves the bottom mount down and forwards. i suppose a person could go that route.
the holes are already in the truck to relocate the top of the shocks.
i used these
http://www.oreillyauto.com/site/c/de...0962&ppt=C0035
and just stuck them in the factory rear hole in the factory top shock mount. although i did need new shocks anyway, and replaced them with a shorter one meant for a 70's corvette. i suppose if you have new or nice shocks already then that might not be as cost effective.
im not fond of how much lower the new bottom shock mount would seem to hang down off the rearend though. looks kind of funny from behind.