Look at this thread for a 24x32. you can see what he did, and how awesome it is! You can fit 3-4 cars in it. For the size this one is, it's probably my favourite one I've seen!
http://www.garagejournal.com/forum/showthread.php?t=157864
This is a size I will be looking at. Can you post some more pics with cars inside to see the space you have? Also, I assume it's 28 deep and 32 across or vice versa?
Thanks!
Kyle
They have said you can roll a 4 post lift on the race deck flooring and will hold 50,000lbs while rolling. I would imagine it'd be really good! Just what I've read from his posts!