Try Great Lakes Skipper an Ebay, I have about 350$ in my gauges and sending units, minus the fuel level. They have 194 bulbs that are easily replaced with LEDs and have a classic look that will flow with your Monza. Faria makes a good quality gauge.

http://i184.photobucket.com/albums/x...psopoh5lrq.jpg

I went and ordered a set of autometer in white with a blue bezzle (got the GPS speedo too...but mine is for a single) and it came out to ~ $800 (<$350 was wishful thinking). unfortunately once these arrive they are heading back due to a shift in boat color and a move to do this at the end of season. New dash, gauges, powder coating and fresh top paint are not possible in time so they will wait. bottom resurfacing, replacing the drive components and exchanging rollers for bunks are higher priorities and then it is time to see how the VP duoprop c7 does....is it too much for the motor, or will the boat fly?