You need to do some research...start with my build thread linked below as well as this one...PM if you have any questions...If 50 state emissions are required then pay attention to mine and MGIMELLI's.
Giant Panda has several threads here documenting Hemi conversions too.
'98 TJ, 5.7 HEMI, 545RFE, G2 33 spl. D44, HP D30,ARBs,4.10s, RE 4.5 LA,Savvy 1.25 BL,35in MTRs w/Pro Comp 15x10 alloys, Warn 9.5 cti w/Amsteel rope, Gen Rite G3 Alumium front fenders and rear flares, Premier Power welder 195 amp,Savvy Rockers,Prothane bumps,LED tail lites, Rampage top
Link to my Hemi build thread http://www.jeepforum.com/forum/f9/so...rsion-1277803/