Thanks for the replies..I'm with you guys on pulling the engine except I've known my mechanic for going on 13 years and he just worked on a couple of troopers and replaced an engine in one and had no issues swapping it out quickly plus he and his employee claim its easier to pull it and work on it than struggle with it in the vehicle. I think it's more of a business decision as pulling the engine means he can clear my vehicle out of the bay and it isn't tying up his ability to knock out inspections and quick turn arounds while he works on the engine in the back of the garage.
Plus, he really believes I am going to go the route of rebuilding or replacing as he doesn't like what he sees so far. I guess what I'm saying is he feels re-ringing one piston and doing a valve job on both heads and replacing a head gasket (this is all hypothetical so far) is not the best avenue for longevity. I don't know...I'm kind of pushing him that route though. I did just find this company today and talked with them and found out he is out of stock on our block but will rebuild mine if I send it in to him.
https://www.sandjengines.com/
At least mine isn't rapping, knocking, etc. Gives me hope maybe we can fix her up locally.
Thanks Scott Larson, I think you are probably spot on as my mechanic spoke of this only that he thinks the injector might have been the culprit for poor combustion and the damage was done before I replaced it.