Yeah try to find a class to race a Pieribon FO 42 with WERA or CMRA.
Due to their A,B and C Superbike class rules production numbers in both stating being set at over 1000 units having needed to be built, it only allows me to race in two classes. One's Heavyweight Twins, the others Formula 1....not sure how well I'm going to do against a GSXR, CBR or ZX10's but hey that's the way the rules written. It was the same with the Shepherd bike. While these little projects are cool they can find themselves homeless.
Something to be considered when building a custom bike of course with me was not going along with the herd and having a bike that was truly my own and just plain fun.
So I'd say, if it floats your boat, go ahead and build it and let the shit fly!