Good Luck GM 26. If you can even find one be prepared to spend $200.00-250.00 for it! I had the same exact gauge converted to an electrical gauge by this outfit and am very happy with the results.
http://www.williamsons.com/
The gauge will probably be more accurate and last longer IMO. At least you don't have to worry about that sender that you paid $250.00 for going out!
