I have had a BackYard Buddy lift for about 4 years now, and could not be more pleased with it. I have an 11 foot ceiling height, and can fit the SL, and my SLK (170) under it. I had to get the garage door track modified, and two sections added to the garage door to make it clear. The garage door lift mechanism is mounted to the ceiling, with the track about 4 or 5 inches from the ceiling. Another option is to use a side lifting garage door, as you might find in a commercial garage, but the folks that did my door modifications, did not have one that would work in a residential setting (it did not have the safeguard electric eye to prevent activitation with something/someone in the way.)
Jonny B
1967 250SL Auto