I think I chose the 4 post because the 2 post needed more width than I had to work with in this single stall. Another thing to check is ceiling height. I have 10'3", but I had to have the 7' garage door replaced with a 9' door so it would make the turn along the higher door track. The track is about 12" from the ceiling. The photo below shows how it looks. Later, I figured out if I back the Cobra in, I can position it so the door motor drops behind the windshield. I get another 6" of lift that way.
Sam
