well it seems that I could not wait for advice, it seemed like a good deal ,here's what I got, from pfyc, Price: $1,259.96 free shiping
SLP's C5 Corvette Long-Tube Header Packages feature 1-3/4" primary tubes flowing into two 3" high-flow venture-style collectors. The headers are mandrel bent 409 stainless steel and ceramic coated to keep heat in, exhaust velocity up, and under-hood temperatures down, while the rest of the system is made from high-quality 304 stainless steel.
Also included in the package are a pair of 3" high-flow catalytic converters, which flow into a 3" integrated PowerFlo-X Crossover assembly. They're fully compatible with all stock emissions-control equipment and use OEM flanges for a perfect fit and proper bolt retention. All necessary installation hardware are included. Backed by SLP's Lifetime Warranty.