I've got an extra sr engine sitting in my garage collecting dust. Everything is EXCELLENT ran perfect except it has a bad ring. I plan on going through it and having machine work done and replacing pistons rings rods bearings seals valve job oil pump water pump ect ect. Full rebuild. How much would it cost to buy an engine that has all of that done. A zero mile engine.

its technically not a zero mile engine but you could sell it for $3000 ABSOLUTE MAX, you should get maybe $2700 for it.. .02