I have absolutely no idea, but I have an Edelbrock TM6 single plane and will use an Edelbrock #2691 TQ to spread bore adapter. I will also test a Holly Street Dominator to see which on runs the best. It's a ways off, but I am adamant on using a TQ. I have bought 3 off ebay that fit my description, and hope to have DemonSizzler build at least 2 out of the pile. They are all the same part number for my build. A 6322s was for a 440 A/T. I intend to stroke a 400 and use this TQ. Hopefully.