thank you all with your input, i think i will take a look at the Perfect Pass Speedo in a 5 inch display and remove the two originals and go with all new gauges thanks again
I replaced on of my contralogs with a gps driven unit. Had to open up the dash to get it flush. It works well; matches my hand held garmin. I plan to try to mount it in a spare contralog housing that I have machined out.