Need some information about Whipple Superchargers

[YukonSS]

Well, let me start off by describing my vehicle. I have a 1999 GMC Yukon 4dr 4wd. I want to make it a beast. I have a K&N FIPK GenII intake and a Stainless Steel Magnaflow cat-back exhaust. It also rides on a nice set of 20 inch Boss 301's. I am going to get JBA headers and a 160 thermostat. My question is in regards to supercharging it.

Right now, I am deciding between ATI Procharger and Whipple. My goal is to run high fourteen second quarter miles. Has anyone seen the whipple on a truck or suv similar to mine and run the times I have in mind? And are the power gains that whipple claims substantiated?

Thanks fellow enthusiasts.