I'll post "items of interest" as they occur to me, in no particular order...all worth the price you paid... maybe.

I had some of the cap screws that fasten the tube between the EGR block & the back of the supercharger vibrate loose & disappear, causing the hot rod to run poorly (low power), idle rough or not at all, throw codes & make a bizarre "MOOOOO" noise every time the engine was shut off.
I used hi-temp silicone instead of red loc-tite when I fixed this problem & haven't had any problems since.(almost a year)

I fixed the frequently loose 22mm EGR nut in the same manner...by substituting hi-temp silicone for red loc-tite & have had no further issues...but still carry a 22mm "stubby" in my glove box, just in case.