It's a Whipple Super Charger.
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by jnsfox:
Yeah James, gotta say that your truck was looking sweet on the new tires. We spent a while near your truck, as it was one of the few properly lifted trucks at the show. Man was there a lot of crappy work being "shown off". Anyways, it was nice to get a close up look at the lifted black one, what kind of supercharger was it running?
Seth <HR></BLOCKQUOTE>