I believe the ramp side bolts on the same as a car. Right where the bumper bolts on. I made a special adapter bracket for mine.
Forum: Corvair Center Forum

Where is the best balancing point to have the rotisserie spindle. The rotisseries you buy have it offset because they usually bolt underneath the car on the frame mounts, but on the Corvair unibody I see people mounting the rotisserie to the bumper bolts which is approximately center line of the height of the car. Of course I mount it dead center in the width of the car, but it is very hard to tu
Forum: Corvair Center Forum