Sam;
I may have a seat solution for you. I'm in the process of building a Gas Roadster, and like you, all of the production made seats I looked at were 90 degree seats. I acquired a carbon fiber Trans Am seat (ex Paul Gentilozzi). It has roughly a 30 degree incline, although that can be adjusted somewhat by raising or lowering the front mounting flange (i.e. your legs straight or your knees slightly bent). The seat is flanged 360 degrees for stiffness and rigidity. While I am not a seat expert, I am a metal fabricator, and this carbon seat is probably 5 times stronger than a .063 6061-T6 seat that is fully flanged.
I am 6 foot, and weigh 225 pounds, and with an SFI 3.2A/20 suit, I fit perfectly in this seat. Smaller drivers could simply add padding to the sides as needed. I showed this seat to Mike Cook at the last El Mirage meet, so I'm sure if you have any questions, he might be able to help you make a decision.
I hope to be able to make these seats for around $500, depending on materials.
John Weatherwax
www.CuttingEdgeMetalSpecialties.com
