i have an 03 cobra tuned by brian at Dyno tune motorsports. With 2.8h kenne bell with 20psi. without nitrous made 694hp 713torque with small shot made 777hp 826torque. on stock exhaust manifolds and 2 1/2 pipes soon to be changed long tubes and 3in exhaust soild rear end and over the winter pistons and rods.appreciate any upgrade suggestons