Marine gauges installed on a car motor
 

I noticed the tachomoeter on my inboard mudboat is not working and would like to change out all of my gauges to matching marine gauges while I'm in the process of changing the tach. The gauges I currently have are: the tachomoete, oil pressure gauge, temperature gauge, and voltmeter. The motor is an Oldsmobile 307, so would inboard marine gauges work? Also what are some decent not too expensive gauges, and where is the best place to buy them?

Bump for the mid-day crowd.

My guess is that it would work since they are both 12volt systems.