go with at least a 10' door, 12' would be better. have 2 bendpacks a HD9 & HD14 if you have the room a HD 14 might better server your present and future needs, but be aware that the HD 14 has to be bolted down. The reason for this is the right ramp is adjustable to accomodate all size vehicles, heck I use it to work on my lawn mower. The HD9 does not need to be bolted as the runways are bolted to the frame. There is slight adjustment but after you move it to where you want the ramp (right one) you have to bolt it down for stability, but with a caster set you can move it around if need be.