What flavor Vanagon to choose...
I'm new here but I've had a couple of westies, an 80 air cooled and a 90 2.1, so, I thought I'd give my $.02...
the newer the better with Vanagons, 86+ is a much better driving van, the slider is much more solid,and interior quality is higher.
I added larger brakes and 15" south African wheels. this transforms the way a Vanagon drives in the wind.
A 2wd is a good choice, you'll be surprised at where it will go, put some good A/T tires on it, just not too big, as it will kill the power.
I don't care for the Subie conversions because the oil pan hangs so low on every conversion I've seen, and in here California there is only one Sub. engine that is
smog legal, a major consideration if you plan on having the vehicle registered here . although the SVX 6cyl is an interesting option
By now all the issues with the 2.1 have been worked out, and there are solutions for them,
one other thing is to always use the phosphate free coolant and change it regularly. my 2.1 went over 200K and never leaked a drop.
If I where to get another Vanagon it would be an 86+ Weekender, waterboxer and add the South African 15" wheels and the round headlight set up with some good E-Code
H4 headlamps. and maybe some mild lift springs and change the final drive.
the other posts all have good advice, there is lots of info on the SAMBA as well.
If you can't find what you want build it!
Good luck