904 to 727 swap

Hey guys, Ok so I opted for a fresh 727 over the current 904 in my 340, 73 Dart Sport. Received the tranny from the rebuilder with a wieghted tq. sent it back and now, seems to be some discussion as to which tq I should be using???? Haven't been able to speak with the guy yet, due to family thing.

FYI the tq in the 904 has a starter ring that is about a maybe 1/2" wide, the one they sent with the tranny has a starter ring about 1" wide. Does it matter whether I run 10" or 11" tq in this tranny as long as it is a 727 tq. 340 is stockish with a factory forged crank. So I know I need a netural tq, just don't know what questions I should be asking of if matters what tq I get as long it's for a 727. Also have a B&M flexplate with both bolt patterns.

Any help would be appreciated