I'll be competing in sprints & hillclimbs again next year, and am planning on venturing south to Prescott at some point.
Are you going modified production then? I've get mine in road going, as the MSA Class 1 regs are now what Harewood used to call "Road Modified" where you have a lot of scope for tuning, diff etc but with a lot of the rest kept fairly standard. From your initial plan, I thought road going as you can be competitive in a very drivable car (mine's fine on the road, just a bit stiff) - but, with a weld in cage and some of the other bodywork mods it would be in mod prod, which puts you up against completely stripped out cars with 16v heads and the like.
It'd be nice to see a few more cars being built for road going, it suits minis very well when they're competing against each other.