My Elan spends much of its time on my two post MaxJax between races as I work on it and check it over. That also enables space to store its trailer under it rather than leave it outside. Storing another car under it would be like the Plus 2 requires taking off the Elans front wheels for the rood to fit under, my Esprit would fit OK I think but never tried it. Don't know how a modern Elise would fit but may be low enough
I support the car on the corners of the body behind the front wheel arches and in front of the rear with the standard MaxJax rubber pads which are about 125 mm square and never had any body cracking problems.
One of the MaxJax posts is close against the garage wall in a 6m wide double garage the other in the middle so plenty of room for another car along side and a walkway between The wall side post lines up with face of the racking I have on that wall for blocks and heads and gearbox storage but there is plenty of room to work on that wall / racking side of the car given the Elan is narrow. Its gets a bit more squeezy if working on my Plus 2 or Esprit or a modern hatch on that side but still doable.
The suspension hangs without issue but I have CV's and poly bushes. If letting a standard suspension hang for an extended period generates problems or not, I am not sure as I have had CV's on both my cars for a long time but I suspect any damage would come quickly rather than over an extended period once on the hoist and probably had already been initiated on the road in normal driving.
At least storing it regularly on a 2 post hoist lets you see the cracking that develops in all the rubber bushes and donuts overtime easier
I have a 5 to 6 inch reinforced concrete floor slab that the MaxJax is anchored to and never any movement of the posts with what I have put on it so far the heaviest being a 1.5 tonne Golf R32. How close I could put the wall side post to the wall was governed by the distance I needed to have the anchor bolts from the edge of the slab and this would be the major issue in fitting a two post hoist into a single car garage I think depending on the foundation design detail and whether the slab ran under the garage wall or not. My Garage brick walls had been built on a foundation and then the garage slab poured between the walls.
Theoretically it could lift my 2 1/2 tonne Touareg
but I have not tried that yet as so far its been its easier to just raise up its air suspension to maximum height and slide under it to do work like an oil change or use a jack on each wheel at a time if I want to do the brakes.
cheers
Rohan