Last year finally did the lt4 blower install. Now 8 months later only regret was not doing it sooner. It makes right at 500hp on E85. My wife absolutely loves it. She had a g8 with a 402, then a tahoe with ls2 swap so the stock yukon wasnt cutting it. This is her favorite vehicle now. Going to go to 22's if she ever finds a set she likes better than the stock 20's. Its lowered 2/5 with upgraded sway bars and air bags in the rear and rides better than stock.