I have a 02 zx12 that got missed up in shipping. To fix it costs to much so my insurance want to total it. At 64" with a 72 shoot of NOS on a stock motor with a step hindle pipe 16/46 gears I ran 8.99 @ 162. Should I get a Busa or keep the 12. I will be going 60" for Tx shootout. I weight 175.