I just got off the phone with a company that sells these am general engines. No intake, no ip, no injectors. You get the engine with heads that's it. But they want $5800 delivered. No core. My 6.5 is still running very well. It's a 2000 so from what I've been told it could run to 250-300 thousand miles if I maintain it. I am restoring the truck and if I could sell my engine for 2000.00 I'd consider the swap. So what's the verdict on these am general engines?
Why? If you are getting 100K - 200K out of the older crack prone blocks, can get a low mile surplus 6.2 long block for $1000... How many surplus military blocks can you get and do a re-ring on for $5800? I would put the restoration money on other things. With studs and rings you are at $2k per engine. Your upper limit is around 200K average before you need head gaskets.
That said the price isn't bad if it is the real deal.