TTI head pipes from manifolds

Anyone try them?? I'm thinking on ordering the 2.5 inch head pipes. I give them my manifold numbers, and they are suppose to send a direct fit. Ends 2" before the cross member. They are 188.00 bucks, probably plus shipping too... I already bought the Jegs 2.5" header back system for 242.00. I thought I would have 450 into a complete 2.5 inch dual exhaust from manifolds past the bumper. Most muffler shops want 550-600+ for 2.5 out the back with turbo mufflers. So, anyone try the TTI head pipes???