I painted my 84 spider in the backyard, but I used a High Volumn Low Pressure spray gun. I changed the color from dark grey (almost black) to Blue. Including all the pre-sanding, primer, a gallon of automotive paint, a gallon of reducer, two quarts of clears and two quarts of hardner. My total cost was about $250.00. I spent several days pre-sanding, then primer, more sanding, more prime.. more sanding...lots and lots of sand paper. I painted on a day with temp in the 70s, no wind, and low humidity. 3-coats of blue, the whole body, door jams, inside hood and trunk, then 3-coats of clear.. I spend two days wet sanding with 1200, 1500 and finally 2000 sandpaper, after that I buffed it with compound and then waxed it, and buffed it out again. it turned out pretty good for a backyard paint job...the main thing is prep before you paint and then lots of sanding....it takes a lot of time.