Baja itself in many cases is the big equalizer as HP in a 500-1000 miles race is not always what's going to win you the race. Many of the BITD races or the UTV Championship where its more of a Balls Out Sprint style of racing, then HP is a big factor and I expect we see a Turbo car win at the overall at UTV Championships. I would say for now Score should keep the class as one.
Now with all that said and with everyone (or most) not happy with the BITD class split, what if to keep the NA cars on a more level ground with the Turbo cars, what if a rule was made that a NA engine "could" be bored over to 1099 cc's? Would allowing the NA car a bit more CC's make them competitive against the Turbo's? Teams used to bore their 900's to 1000cc's, so the idea of boring over is nothing new to the class or builders. Would this be a popular idea and then put both the Turbo & NA cars back in one class again? If something like this was to be implemented you would want both BITD & Score to do it to keep the class rules uniform over the multiple series.
Lets face it 90% of the new builds are going to be turbo cars. In the next few years the NA car will probably be fazed out just by the evolution of the UTV. But by allowing them to make some more power now might keep those cars valuable for a bit longer, and be able to compete with the rumored Arctic Cat NA engine. Many limited buggy classes already require a simple CC check, so checking to top 3 NA cars would be no big deal, tech wise.