Thanks for all the replies. Yes, it is volts. Don't know why I was thinking amps. I will be getting a boost and EGT gauge to add to the set, but I figured I would put those in that cubby under the A/C controls that I don't really use. I'll see if the senders are still in the junked car, but I don't know what condition they'll be in. Otherwise, I'll check out the links you sent.
The yard I went to this time was Russ VW in Duarte, CA. The prices are a little higher because it's a full service yard, but for the condition of the fenders I got I couldn't pass it up. Got a core support from them, too, for single rounds conversion. Other yards I've had luck with (pick and pull) are the Pick Your Part, and International Auto Wrecking in Sun Valley, CA. Not a lot of MK1 Rabbits, but Cabbys show up quite a bit and in good condition. I was able to get a sparkling clean bumper for the single round conversion, headlights, grill, etc., as well as some nice performance styling parts for the interior...all in very good condition. No 2-door Rabbits, though, so I'm still searching for new doors and mirrors (I want to keep the simple manual style mirror setup I have now (no remote)). You could also try Max's German. I think they're in Van Nuys. I've heard good things, but have never been.
Anyway, thanks for the tips.