I certainly don't speak for the man, but to my knowledge JPS is 100% against the SB100 route, as any affiliation with JPS would cause the vehicle to immediately be disqualified. As confusing as the whole SB100 process is, one thing is clear: any vehicles completed by a builder do not qualify. If the OP has stated the car was completed by JPS, that's going to be a hurdle they're most likely not getting over. But I would hope they knew enough going in to avoid that.