: WE are building up a 351w (392) and powerglide tranny for the Mav drag car. Have the trans all done,ultrabell, brake and input shaft for use with 350-400 converter. Need to know if any one has used this setup and what flexplate to get or if converter needs to be made to fit Ford crank pilot. Have always run C4's but after seeing the consistancy and near perfect launches with the glide, just have to try it. Thanks for any info you can give. Maybe some circle track guys can help. I know a lot of them use glides these days,Back in the early 60's when I dirt tracked in Nebr. we ran 1932 to 1948 cars. I had a 32 Ford with a 289 Cobra eng. and 39 trans, 270hp tore them up by the gross, anyway enough of that. Thanks once more.