Got a problem on a late 80's LT1 Roller Rocker Tuned Port engine. The engine is installed in my wifes 93 Jeep Wrangler, we installed the engine as part of a ground up resto/hotrod rebuild about 8 yrs ago, the drivetrain consists of a relatively stock low mileage LT1 (85K on it now), 700R4 Art Car Modified drag trans, Dana 300C T-case with a Currie twin stick conversion, and Dana axles front and r/r, all with roughly 11K since rebuild. The Jeep gets driven about 2K a year and lives in the garage, she's built to handle some pretty rough terrain but the worst it's ever seen was the curbs at the mall, it is my wifes truck. I was having a slight issue with a lifter tap at start-up (it gets started and run at least once a month whether I drive it or not) well now the lifter let go and bent a valve and who knows what else in the engine. I have a couple different engines available that'll bolt up with minor work, but thats where the delemma starts. Do I sell it like it is with a bad engine? This will mean taking a big loss in this economy, running it's worth at least $4500, not running who knows. Do I rebuild this engine? Not sure how severe the damage is and it could cost a chunk of change to get it back together. Do I drop a different engine in? I've got a fresh rebuilt 4.3 that'll bolt up, would a 6cyl be that bad? I also have a low mileage 305, low mileage 302, and a low mileage 5.3. The 5.3 would take a new computer so I'd have to spend some money for that but the wire harness is already swapped for a V-8 so most of that problem is taken care of. I can also get a low mileage 7.4 or a low mileage 6.1, again computer issues and these engines would also require suspension work and new motor mounts and transmissions so there pretty much out of the equation. I hate to sell mostly because I'm a car horder and this trucks Blue, my favorite color. Once my wife finds out it has engine issues she'll sell it to the first clown that knocks on the door with a $1000, she's done it to me before so I have no illusions about that. Any ideas or input?