Transmission, torque converter, updated starter questions

I agree with what AJ said about matching the flex plate to converter bolt holes before you bolt the transmission to the motor. Take the flex plate back off the motor, match it up to the converter so all 4 bolts line up to the converter lugs, then mark both the flex plate and converter. I usually hit them with a shot of spray paint. It will only line up one way, and it will save you a lot of aggravation to mark them beforehand.