for one its a guy, LOL. but hes my best friend. and it blew all its coolant out the tailpipe today on its first test drive. so. im saying its gotta be a junk block. its had 3 different reman heads, and all new pistons/rings/bearings every time. but less than 3 miles and its blowing coolant out the exhaust (in smoke form) and throwing it up out the coolant overflow when not on the throttle. we are DONE with this inline 6. he now swears he will never own another inline 6, of any make or model, carb or injected. sooo... since he still has mad love for the jeep, we are going with what im intimately familiar with... the chevy 350. ive got a line on all the parts. a friend has a rebuildable core motor for 150, and another buddy has the pre-made motor mounts for it, as well as the adapter plate to go from the turbo 350 trans to the stock jeep transfer case. and i already have the tbi wiring set up, just gotta swap computers and tbi units (and maybe a couple wires gotta get switched around), and we are rockin! i really appreciate the help you guys, but after over 100 man hours into this piece of **** and to have it blow up in my face... im done with the 4.2. and the bit*h of it is, right be4 i realized how bad it was puffing smoke out the tailpipe, i finally got the distributor set in a spot where i could idle it at 700 rpm all the time, not die after smashing the gas, AND not pop and sputter anymore. fml. but again, thanks to you all. soon to start the 350 swap after i get started at my new job. thanks.