Hello All, newbie here. I have a 66 mustang coupe with an 8" rear end, has a 302 with mild cam and holley 600 cfm double pumper and 4 speed top loader, I am wanting some more power and quickness. I am not sure what gears are in it now but she is definately not quick. She is not a daily driver and I seldomly take it on the highway. Any suggestions for a good set of gears?