I'm not sure how easy it will be to start a new class of cars without building one and proving how well it works and how good/fun/increased skill level it is. If you built a 4 stroke on a budget that could go out and hang with and beat the 2 strokes consistently then you may have a better chance of getting others attention. Like anything else, you will have to go out and prove your idea works. The 6x6 scene is small and there are not a lot of people looking to join it. Unfortunately the heyday for 6x6 racing has long passed and it is more of a novelty today. You need to look no further than last year when some 6x6 races were canceled at the race events. That's a sad thing to say because I think the 6x6's are a lot more fun to watch than the other ATV's. As for alternate solutions, I am not sure if you are referring to engines, new or different classes, trying to get new participants onto the track or all of the above. I don't have great answers to any of those. Good luck with your idea and your build.