I have a new matched pair of Tillotson HR racing carbs setup for gas, fully built and setup by George Herrin. I did some parts trading with George several months ago and got these, and they have been sitting in a box untouched since. They are both HR-44 carbs, but are similar in size to an HR-191. They are race ready and come exactly as he sent them to me. They would be a great pair for a Super Mod twin/ FXT engine, or individually on a Super Mod Single/ FXS. $225 each shipped or $400 shipped for the matched pair.
I also have some matched 3/16" steel carb flanges I can include if you want to make your own custom steel intakes