Originally Posted by Griff

I have the same size water speedo. I assume you don't have enough room to enlarge the hold for a Monster 4 5/8 guage?? Livorsi makes an adapter bezel that will cover the hold and allow you to run a 3 3/8 speedo.

Originally Posted by NancyT

I have a 2002 35' Reggie Fountain Special Edition that I have owned since 2002. The conventional speedometer keeps torn up all the time. I am wanting to put a GPS speedometer in my boat. The problem is the inside diameter of the hole in dash where the old speedometer was is 3 3/4 " in diameter and I cannot find any white in color GPS that is that size and the outside needs to be around 4" to cover the GPS hole and be flush with the dash.

I have a slightly used white Gaffrig 120 MPH GPS speedometer, the very outer edge measures 3 3/4, it came with a colored trim ring that I reused when I replaced it.

Originally Posted by NancyT

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That is correct NOT enough room to enlarge the hole. If I use the Livorsi, is it a white face with readings from 0 to 120 mph? Do you know the cost of the GPS, antenna and module with the adapter plate? Any idea on who to call for this setup? I really appreciate your help. Harold

Originally Posted by GPM

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Why did you replace the Gaffrig GPS speedometer? Is it in good shape and does it work well? I need one that will read up to 120 mph. Is the opening for the Gaffrig to go in measureing 3 3/4inches. The opening has to be that size and the ring on the GPS outer is around 4 inches. Let me know what you want for it and do you have the antenna and connection box with it?[/QUOT

There was nothing wrong with it, my boat ran a little faster than 120 so I replaced it with a digital. I only have the speedometer, Livorsi sells everything else you need, click the link above for the antennae and trim ring. PM your email and I'll send you a couple of pictures.