There is your exact accurate answer! Listen to Dustin, he's the real expert on his supercharger systems!

Best Regards,
Ray @ Raylar

You do not have mefi1.

Does anyone have a marine blower/supercharger preferably Pro Charger or Whipple for a 502 engine?? I am looking get some more power out of my 1998 formula 252.

We bought a procharger setup foe a 500efi for our 502mpi and evything mounts in different locations, if you call procharger they will tell you, you will need a different bracket with the idler pulleys which is 500 bucks alone, just buy a kit that fits you will be a lot better off
Been there done that not fun when you spend a lot of money on something you can't really use

Just my .02 cents