My advice? screw the garage, put the money into that pony of yours. If you need toolboxes, check out ebay for a used craftsman box. usually they will come with tools as well, which will save you from havign to buy more tools to get you through. As for workbenches, Even a folding table will do you tons of good for actualy working, but not so much hammering and whatnot. Maybe if you could*secure* some milk crates of the same size, you can organize parts into them, and usualy the sack up nicely. It only has to be temporary. remember, spend the money where it counts... keep the GF happy, and get that car on the road.
The other thing you need to do is pruge the place. set aside a nice weatheredweekend, and make no plans. just clean out the garage. if you havent used it in more than a year or two, and it doesnt go to the car, throw it out! stick it out on the street with abig Free sign. no sense in saving **** you havent used in years and probably wont for more to come.
The other thing you need to remember, is keep the work area clean, and dont start too many projects at once. Thats what the milcrates are for. If you are working on one thing, and you have to wait for parts, stick it all in an empty milkcrate, and stick it under the "workbench" dont mix up parts or anything like that. If you have the room, go to Hf or someplace and get the cheapest steel shelving you can find. It all helps. The key is to get things out of the way for when you want to work, and not to mix up projects. goodluck, and post some picks so we can see what your up against and make suggestions
Jim