Does anybody make an aftermarket intake for the revolt?

Are you referring to the runners (aluminum with the throttle bodies built in) or the plenum (plastic box) that hangs on the bottom of them?

Are you turbo or NA ?

If your turbo, Pilot makes a nice custom SS plenum if that is the part that you are looking for. If your NA you should be able to get some K&N (or other manufacturer) filter to go into the sleeves or strap on directly.

Looking for more hp and more or better throttle response. Can`t afford a turbo. Mostly sand drag mine and some riding at Silver Lake Dunes.

If you are going to stay normally aspirated a air intake plenum isn't going to make anymore hp. The Redline throttle bodies and intake runners that you already have are the best hp makers that Weber has. The only way to make more hp from what you have now is to change your fuel injectors to smaller ones and run a fuel programmer like the Big Gun set up to add fuel back in to get a 12.5 air/fuel ratio. You will need a wide band air/fuel gauge to monitor that. This will add way more power than any other mod short of building a larger engine or turbo charging your 750.