Does someone know if I can take a 901 trans "V" 5th gear and invert it then put it in the location of 4th gear? Would this work to be the same as a"R" 4th gear? I'm building a short box for my 911s. Right now I have the parts to make a gear box with A-1st, F-2nd, KA 3rd (filped-ZD 5th), R-4th (fliped V), X-5th.