Heads up display for Viper?

[04 Black GA Viper]

My friend has a gen 2 Viper dedicated track car. He wanted to know if anyone makes a heads up display that could project mph on the windshield. I have a gen 3 Viper and would be interested as well. Any info would be appreciated. Thanks.

 

[Chuck 98 RT/10]

It would probably be better and not much more expensive to get a quality lap timer system that will document speeds at various points around the track.