Yes there are cars that should have been winners & drivers that made lesser cars look good. I remember the late Lin Neilson having a yarn to me at Teretonga one day and told me that my 1600 Ford powered Imp would always be a brave mans car!, he probably was right but as I had spent a lot of time at club gravel events with it I never felt that way about it.
Dont want to drift but the HMC thing has always amused me going under the 'Muscle Car' logo & then not allowing Corvettes, Cobras etc, that must be news to some!
Perhaps the SI has a bonus in the matter of the clubs running the three circuits & all running club championship series within their meetings, series like these being proposed can/could be trialed within these meetings to see if there is some interestwithout a lot of organisation or hassle like George had with the his setup, Going back I remember most of the local OSCA cars also ran in club events at Teretonga, still happens today with old NZV8, OSCA, Endurance cars etc, so perhaps the NI guys need to try something along those lines & run your classes within one big club race @ Manfield/HD, Taupo, & Pukekohe, be a lot easier for the circuit owners if your going to just have say three max grid 'club' races rather than a whole lot of 'mini' grid marque races.