I have a Autolifter 4 post cable lift in one of my 3 bays...normal width, 8 ft height garage. I can put my DeLorean on top, and back the 230sl with the top down up to the windshield. It's a tight puzzle fit, but does keep these two cars in one bay.
My lift did not need any reinforcement on floor, as each corner sits on about a 1 foot square pad, free standing. Have the 110 volt model. No problems at all. Actually, the only problem was in the delivery...the freight truck backed in, told me I had 45 minutes to unload, stated he could not help because he was union, and sat down.
I scrambled to get a couple of guys to at least slide the package out, and drop it using a floor jack. Then the driver left.
1965 230SL
Silver Spring, Maryland