Well looks like I'm going to need a rebuild. Not sure what is wrong but I'm thinking crankshaft.

I have a 1996 4x4 6.5

I'm at a crossroads though. I can pay my guy around $3000 for a rebuild give or take. Or I was thinking I could get a donor truck (1997 gmc) with 95000 miles on it for $1500. The plus with the donor truck is it has new wheels and tires. Suspension parts I can use and also the newer double thermostat set up.

I just installed a new injector pump 3 months ago on mine before engine went out last week so I'm good there. I figure I get the donor truck put new injectors and glow plugs.

What do you guys think?