I'm putting a c6 out of a 71 Torino GT 351 4v behind a 70 351c 2v. A Fmx was in the car and the flexplate has torque converter holes that are 11 1/4". The C6 has torque converter holes that are 10 1/2. All I have is the Flexplate for the FMX and it is not going to work. I know someone out there has done this before and was wondering what flexplate you used to match it up.