Originally Posted by Summer89

Hey all. I have an opportunity to pick up a stock merc hp500 long block with je pistons and afr heads, for roughly the same price as what it's gonna cost to build my 89 454 mag to 500hp. It's a new block with no run time. I'm curious if all my accessories, flywheel, bell housing, cooling system, oil pan, sensors, wiring, etc would transfer over? Do these need additional oil cooling vs a stock cooling log? I also have a cooling crossover tube ide like to use as well. I just picked up some gil manifolds im using on whatever build I just need the right risers.