Thanks! That's actually what I ended up with - it just arrived the other day, so I haven't yet mounted it. Got the smaller, old-style tank, and will have to trim the brackets a bit to get it to fit. I have AC lines running down the side, which prevented me from getting a fatter tank.
I'd bought from GoWesty back in my VW days. They still have good customer service: tank arrived in 2 days, and they quickly shipped out a replacement shield for me, since the one included was a bit chipped up. I also won free shipping with coupon code LUCKY13
(the 13th person each day in March to use the code wins, and a cool pint glass).
Will post pics to this thread when I have it mounted.