I am considering buying the Richmond street 5 speed with overdrive for my 63 Nova, it's a 355 SBC about 400 to 425 HP, Stock engine compartment with full CBR front suspension and CBR Headers. Primary use would be street with a rare run down the quarter mile just for fun. Do you guy's know if the floor or tunnel needs to be cut or modified and does the shifter come out anywhere near stock 4 speed location with the factory hump? Thanks for your help! and if you have this trans in your car ...How do you like it?