From a post made by "tjkj" a while back, the rings are set too close to the top of the pistons on a KJ to support a boosted type setup without eminent destruction of the 3.7 in these puppies.
So, the answer would be bad idea.
05 TJ RME 42RLE with some things
05 KJ CRD 545RFE, GDE Eco tune, Franky II, Al's 4.5 A-arms, JK Rubi Moabs, Silent Armors 245-70-17's, Spidertrax Adapters, Rola Basket, Fumoto Valve, Pinch welds pounded
FS or FT (2) JK Rubi 17" Moab Rims - really nice shape
Need JK Rear Spare tire bracket for project