First off i got a 66 mustang coupe 289.I just put a new street fighter c4 trans in about a year ago and before that had changed the rear from i think likea .280 something to .325 gears with a new posi rear someone was telling me that those gears would not work well with a manual trans or just wouldnt work at all. i wanted to bolt a t-5 manual trans to it anybody got any answers or comments jus lemme know

 

Why would gears have anuthing to do with the trans working or not? 3.25 are fine with a t-5