i'm glad you ask about the 6 flanges i just went and got the part # from the box go to tci.com part# 251050 shows the converter i got i never really read about it before i gave them engine spec sheet they picked it but i just looked it says 4 or 6 bolt flanges take a look if you don't believe what they say give me your email i'll send you a picture tomorrow when my boy wakes up i don't know how to send pictures . tci said that 1/8th inch gap isn't enough to worry about. when i squeezed it with my fingers i almost got the converter flush with the flexplate. the big thing is the externally balancing it will take me 6 hours to take it out no room its in a willys i'll call manufacturer on friday if i have to i'll take it out but i hope they say just cut off weight thanks zano