I may have something that you would like. It is a custom gun I had built a number of years ago but never raced. Another resource you might tap into is Joe Barnsfather. Joe does excellent work on 1911s and may have some leads on guns or could build you one from scratch. In fact he is building me a new gun right now to use at the Single Stack Classic. I think he can be reached through the folks at Openrange Indoor. Hope this helps and good luck at the matches this year.
Team Carver Mounts
NRA and GSSF Life Member