I’m putting a powerglide behind my 440 in 69 dart, while I’m at it I’m going to go ahead and throw a mid plate in it. I’ll be running an ultra bell, with a fti converter. I’ll be having a custom drive shaft made. My questions are what is the best flex plate to run, where is the best place to get a crossmember that will fit this, and what else will be needed to do this swap?