Ok, I need some help and ideas. c4 tranny, 26 sline going on 81-83 200! I need the correct torque converter. How do I confirm 10.5 inch or 11.5 inch. My research tells me the 10.5 inch is the one. Will the starter match to either? if so how? Is the measuement above not the diameter of the torque converter? Any transmission experts out there, HELP!