Indeed, check with Fast Eddy.
At 6'4" you may have a challenge finding the right screen. I'm 6'2" and got a Slipstreamer Viper S-10, for about $90. The Windvest was w-a-y more expensive.
It took some tinkering with the mount height and angle of the Viper to find the sweet spot but now it provides a good deal of protection.
Shop around and check out some different brands. Good luck
