Anybody tell me wat the stock rear end ratio is and is there different ring and pinions available to lower the ratio?????....i hava touring.....i remember in the early 60.s the only mods i made to my 390 fairlane was headers, traction bars and going up to a 456 rear end ratio.....that was the biggest bang for the buck there was and probably still is.....cept of course for turbos n stuph