Replacing 1980 KZ750 LTD gauges ???

I want / need to replace the stock gauges on my 1980 KZ750H1 LTD. I don't like the 85mph speedo and my stocker tach is sticky ... both have been externally damaged in a recent tangle with my garden tractor.

I like some of the features of the stock gauges like the volt gauge in the tack ... and the indicator lights for low fuel, brakes, etc, etc. but I could live without the goodies.

So ... what will work for me ? .... fabricating the mount isn't too big a deal for me. Mainly need to know about calibration of the speedo and tack off my stock 750 speed sender at the wheel and the tach drive.

My 650 also has the 85mph pos speedo, I was told here that using the 140mph will work fine with my sender.