better watch out with those fmx trans, i knew a guy who had one with a high hp motor and ruin his motor with that trans, forget what happened but it let go and doing so ruin his motor, im not saying that yours would but be carefull, i changed over to a JPT c-4 full roller trans on my 69mach1 and never look back, lighter much lighter then the fmx and more performance parts and converters to boot, that trans is sitting on my garage floor and its a heavy mother to move around, c-4 i can pick right up.