or u can do wat i did. 4.2 crank, bored .40 over, special ground cam, flat top pistons, msd dis.,mustang 5.0 32 lbs. inj.,bored out tb, ported and polished head, block and head has been decked. header, 2.5 in exhaust,edge programmer, nos, and warm air induction.
about 550 hp. for about $6,000. and i get 17 mph
ROSCO.96 Jeep xj. 2in CBC lift, CBC air intake, CBC rims, and CBC exhaust.