vonmosher455

I am sure that i have SN model. But how can i find out which one. I cant find a model # on the supercharger. i did some research on this forum and Googled some pics and other research, hard to tell though which one it is. there was no paper work when i bought the car about the system on it. think i have it narrowed down to the SN91 or up. But i could be wrong. Any help on this would be great.