anybody make this mod ???

Ummmmm, Kleemann maybe?

LOL, that crack me up. Kleemann and Renntech have the SC application on 55 engines.

They also make s/c for the 500 engines as well.

Yes i ´have. The part kit you get from Kleemann is not the best one, its looks like something you can buy from the supermarket except the kompressor. I had a big trouble with the waterpump on the supercharger. I had to send the kompressor back to DK for replacement of it and after a while the kompressor broke down again. They said that that there was no oil pressure to the kompressor but i messured it before installation and it was fine. I think some of there parts are not the best one but some are just fine. But i can tell you that the car was amazing.