Is there just (1) pair/part number for f7/f8/f9 and are they for sale yet. If so how much for a pair in black paint for a f7 into the stock muffler. I saw the dyno tech test on a 05 f7 and they made 161.6 hp @ 8100 rpm with .667 bsfc. Can i use some or all of the following items that i have with them. Boyesen rad valves, 2.5 offset key, bullseyes and bmp big flow intake. I do have a boondocker box from D&D with extended rpm spec and a digatron egt gauge. Right now i'm using a BMP mod pipe, BMP light weight can and D&D y-pipe. Any info will help, thanks.