I only have a two-car garage and limited space, as I am sure a lot of us are in the same boat. So this is what I did to set up an overhead trolley system while keeping the cost down. Items you will need are as follows. You will need 2 6"X6"X8 pressure treated beam (Home Depot $24 each) A metal I-beam 19 long (new 6" $350) used 8" 24 long off of craigslist $100 One or two ton overhead trolley (Harbor Freight) 1 ton #97392-2VGA $59.99 2 ton #40493-7VGA $79.99 Chain hoist (Harbor Freight) 1 ton #30324-6VGA $64.99 2 ton #631-7VGA $72.99 A couple of 2X4 I used a total of (6) 8 inch lag bolts (8) 3" lag bolts Locate the area you want to set up the trolley (I set mine up in the center of my garage for removing the body from my car) Attach 2X4X20" between the two wall studs at the top, middle, and bottom to attach 6"X6". Use the lag bolts to attach the 6X6 to the 2X4 (Ensure that you measure the distance between the floor and ceiling, then deduct the thickens of you I-beam first) Now call all of you buddies over, be sure not to tell them what your planning or they might not show, or find an AC duct lift. Now lift you metal I-beam on top of your two 6X6 beams and then using the (8) 3" lag bolts attach the I-beam to the 6X6 Attach your Trolley to the I-beam and attach your chain hoist and there you have it. Cheep but effective! I set mine up in the center of my garage in order to remove the body of my car by myself in order to work on my frame. I can remove the body and slide it out of the way while I work on the frame. Then I am able to roll it back over the frame when I am done and put all of my items removed from garage back in.