i have a stock Dodge SRT-10. so i called Paxton to see if anyone in my area (Chicago land) had the newest supercharger on theirs? they told me about didraceengineering.com to see one of the first inercooled they designed for that model. so going from 510hp to 630hp is good for me. my question is should i go for Paxton or Vortech? if anyone has knowledge on which one to go for let me know? but it looks like ill be going to the race engineering place to get it done.