Converting Auto To Manual Question in 1969-70 Technical Forum Posted September 18, 2010 · Report reply Hey Guys, Just a couple quick questions on converting my car from a FMX transmission to a 4 speed top loader. I have all the linkage in the car with the clutch pedal, now with the center console out of my car, is the hole where the automatic shifter big enough for the top loader or is it too big?? I have no clue what to expect. The console i have is for a manual so im not worried about that. Its the actual hole thats in the floor? And also, is the driveshaft the same for an FMX and 4 speed toploader?? Thanks guys!