Only as long as you can do a lot of the work yourself. I'm not sure how much a new top goes for, but its probably close to $1k. Next, you didnt mention anything about how she runs other than needing a tuneup. The opti unit in these things seem to work or dont work. If its missing, maybe just injectors. More than likely, some carbon tracking on the opti cap and rotor. $150-200 for parts. Wires, $70. Might as well replace the water pump when you check your opti. $200. Hows the interior? If its livable, then no money involved. If not, seat covers, carpet etc get pricey real quick. Paint will cost you nowadays, the skys the limit on that one.
Well I try doing most of the mechanical work that needs to be done to my cars myself. I mostly learn as I go, but usually always finish the job correctly. I'm beginning to worry that this "tune-up" that I was told this car would need, may in fact be the opti-spark. When running, it takes the gas sometimes and throws me back in the seat, while at other times it misses and backfires bigtime. The guy I bought it off of used to have the dealership do all his repairs and he had over 20 thousand in repair receipts that he gave to me with the car! I'm assuming he was just sick of pumping money into the car, but I now realize I may be pumping a good amount of my own money into it! Any other possiblities for the skipping/ backfiring? Oh, and the air conditioner compressor pulley is rattling (not the pulley it self but the metal piece in the circle portion of the pulley), so it sounds like crap at an idle. Also the belt seems to be inching its way off the AC pulley even after I put it back on twice. BTW, i bought the car without ever driving it because the belt had broken off when I started it. The person I bought from assured me that the motor and tranny was solid and that it may need a fuel filter/tune-up. For me this didn't seem like a big deal so I had triple A tow it home. I got the belt on today and drove around my block to notice these problems. I'm getting a little worried now.

I usually always test drive a car before buying it, but I couldn't resist this one. ;help