B&M torque converter question

Hey guys, called B&M technical support, told em I have a 74 amx with 401 and 727 and they asked about cam numbers etc and they told me I needed a 10415 trq conv. I get the converter and it has a starter gear welded to it... so I called them to discuss and ended up with someone who didn't seem to know what to do as they have no application for AMC he says all of there 727 converters have the starter gear. and I'll have to use their flex plate.....but he cant tell me which one Soooo I call summit...guess what...they don't have a clue either. both places said there are only two flex plates to choose from but they are both for Chrysler crank bolt patterns. So, what say you??? do I grind the welds and remove the starter gear from the torque converter and use my flex plate? or use their flex plate? and if so, does anyone know which one?? thanks for looking and any advice you might have.

                                                 Scott

They also sell converters for AMC'S ,some one doesn't know there catalogue very well  .  Found both on line real easy when I needed them

AMC converters have no ring gear that converter is for a dodge. they sold you the wrong one

Just got an email from B&M telling me that I need to return the torque converter as it will not work and they don't have anything for my application. and they told me to buy a TCI...wow

yes the basic converter is the same as far as splines and hub size. I would check the bolt holes that bolt the converter to the flex plate, stock is a 5/16 hole some performance converters are 7/16. I am not sure how easy it is to enlarge the ones on your current flex plate.