The procharger was a great addition to my 99 cobra. At ~8.5 lbs, I gaind approx. 125rwhp. The install wasn't too bad (fitment was good) but time consuming as you have to replace fuel pump, injectors, MAF, etc. Although you have to change the oil, which in my reverse rotation application requires removal of the head unit, it saves from tapping the oil pan, and removal only takes 10 minutes. Procharger customer service is great and wouldn't hesitate to buy one again.