205 is a poor choice b/c you can't get low enough gear for it. It's only 1.96:1 in low range. It IS bullet proof, but there just aren't low enough gears....though there was a 3:1 kit available at one point....I dont' think it still is an option though.
The D20 isn't a bad case, but it's offset, it's old and parts are hard to come by.
Oh, and PAINT that thing!!
Sean
