Why don't you try laying the windshield way back ala Bob Johnson in '64 and see if that works...might be the next best thing.
Yes, the small one looks cool, but must be drilled and mounted in new holes that aren't used by any other things on your dash...I had about 3-4 extra holes that needed to addressed when the small windscreen wasn't in place. My car used to be USRRC colors and looked proper with a small windscreen, but is now FIA, and the windshield is proper with that, and the small one got tossed.
I'll be at Willow, but probably not with the car yet. I'm falling into that 10% club of waxers now that the car is nearly complete and looking very shiny again. I'm going to be using it as a display car for a product that I'm going to be marketing, and need it in good shape all the time. If I decide to get serious about going out there again, I'l get something like a late model Mustang or something, as they're safer and can go faster anyway...and cheaper too!