So I have a 1967 mustang coupe, and my grandpa had a 5-speed trans out of a 4 cylinder thunderbird from the '80s. I know get your laughing out of the way now lol. I just want to know if this trans will be able to hold if I have a 300 hp 302 behind it doing launches on prepped surfaces. Has anyone swapped one of these transmissions in before? I'm only 17 so I cannot afford to just go grab another trans, this is what I have. I really don't want to have to go back to the c4 that was in the car. I'd love to have a manual instead of the boring auto that was in it.