I found an electric pressure gauge for about $80. Here it is:

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_745259_-1_10677

It matches my greasecar fuel level gauge pretty closely, so it will look good on the dash as well.

BTW - Anyone know where I can get a new in-line sender for my WVO temp gauge? I screwed up my original sender.

Thanks!

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1987 Mercedes 300D ~200K (Greasecar & Biodiesel)
1993 Ford F-250 7.3 IDI diesel 165K (Biodiesel)
1996 Thomas/International Bus with DT466 engine