I haven't seen a response to your question yet, so I'll give it a shot - the only difference I know of between the A/T and manual frames is at the point where the shifter sits. The 5 speed shifter sits down inside the frame a couple of inches, and I believe with the A/T frame the shifter sits on top. I have one frame I got out of a junkyard in CA where someone air-chiseled out the 5 speed shifter mounting plate - must have been converting an A/T car to manual, I guess. And ruined a fixable frame in the process..... -- Darryl Tinnerstet Specialty Automotive McCleary, WA