So I’m looking for some insight,I have a 502 mag gen v that needs a rebuild and I am able to get a deal on a 500hp blue motor comes with everything except sea pump and exhaust could I swap these parts over from my 502 mag? And how interchangeable are these motors with a 502 mag?Any help would be very appreciated

I believe you can use your belt driven accessories, but your exhaust will not work and revert water because of the cam in the HP 500.