Sounds like you are dealing with a `73 or 74 S.B. Look at the 3rd vin #. If it is a 3 , 1973. 4, 1974. The A/C would more than likely cost more to repair than the car is worth and besides it will kill a good car in the long run. $700 ? It depends. Pans ? Is the carb the only problem with the engine ? Is the tranny any good (jumping out of ANY gears, noises etc.)? Then there is the famous S.B. front end. Is it tight ,No wobbles, shimmies, banging, knocking about etc. It could get expensive. It hard to judge without seeing the Bug in the flesh though. I still get the shivers over the price of what Bugs are selling for these days. $700 may not be out of line. Buyer Beware. :-k