Flexplate is not fits the torque converter

You really need to contact the converter manufacturer for the correct part. You may have the wrong converter as well. Ordering from Summit and asking us for the correct parts isn't the best thing to do.
Ok, looks like I've exceeded the number of questions within the tolerance level :) I've asked TCI (manufacturer of the part) directly and I've god the wrong answer. that's why I'm asking here, hoping to get an answer from the experienced (and not theoretical) audience. Sorry for the number of questions, I'll try to find the way out somewhere else.