In light of changing over to another setup I was curious about what a stock 502 mpi fuel injection setup is worth? It would be upper,lower, wiring harness, ecu, fuel rail, injectors and all sensors.

I'm not an expert by any means but I've seen setups anywhere from 800 to 2,000. Most recently I saw 2 sets for 2500 if I remember correctly. I guess it's all in what it's worth to you. Most people upgrade to whipples and the stuff sits on the shelf awhile and when they get a chance to get 2,000$ for gas money for those whipples they'll take it! Lol

Based on your signature you have twin motors right?

Good luck!