Realistically, what's your budget? How much money have you put aside to throw into a car like this?
The rule of thumb nearly everyone talks about in the air-cooled forums, was buy the best example you can afford because these cars are more expensive to fix up rather than buy in good condition the first time around.
Buy something with engine trouble, you're looking at an easy $5k rebuild. Body parts and miscellaneous parts need replaced? That stuff adds up REAL quick.
I guess what I'm getting at, is that I hope you know what you're getting into.