i have an m-21 that i just rebuild about a month ago or so. and a 11 inch clutch with stock bellhousing. and i am in the middle of building a 486 bbc. im looking to at most be about 600 to 625 lbs of torque. this is for street only. will i be ok or will i end up blowing thing appart? i dont beat my car but i do drive it hard sometimes. what do you guys think? just remember not a race car and it will only see 5500ish. thanks al.