Pre-magnum flexplate on a 46RH?

Please pardon my ignorance. I plan on using a BPE 408 (360 magnum) with a '95 46RH transmission (A518 with lockup). Techs at BPE recommended using a neutrally balanced torque converter with a weighted, pre-magnum flexplate. My question is, would the LA flexplate work with the 46RH?
Not being a smartass at all, but Blueprint sells that combination everyday. Call them and see what they use. @Johnny Mac is their rep and a member here. I tagged him so maybe he'll chime in with some help. Welcome aboard!

I may have spoken too soon. I looked on their site and all I see available is the 727 on the small block package. Johnny should still be able to help though.