In addition to painting my exhaust tip, and installing those awesome facelift vents, I pulled out the trunk carpet... the wood platforms underneath... and installed a radiant heat barrier (silver both sides, 16"x25' roll, The Home Depot).
Next time I go for a cruise upon my return I'll check to see if at all it helped keep the trunk heat down, and will report upon this forum my findings.
Congrats on the Quik Jack, Brian!