there is a world of difference from an F0 series bike handbuilt in a race factory to a bike you buy from a showroom and modified. OK I know how much work Birdy did on those bikes but it simply is not comparable. If you want to see the difference pop down to the new WSB Kawasaki race unit in Penrith, full factory backed and a lot different to how they used to race. Only thing is the engines aren't there, they get built elsewhere (France) shipped in for each race just like Ducati do. Birdy's Blades didn't quite have the same thign last year
As regards relationship to a road going bike? its not even close, about the only bit of the rules that applies (quote from FIM rules)
in effect the bike has to look the same shape as the homologed bike. The rest is virtually open, you can change everything bar the crankcases, got to use same heads but can alter everything moving bar the number of valves and their diameter, twins must use same conrods and certain parts are made from the same material, other than that a factory motor can be almost a MGP spec engine based on production cases and rods. The only part of the chassis that has to be the same is the main frame, nothing else, sub frame, swingarm, forks can all be changed. An F0 series is only related to a 1098R with 4 bits really, crank, head, conrod and main frame. I'd love to think i could have something like that in my garage but the reality is the bike you buy looks like it but is not comparable unlike Superstock.
Superstock is all about racing production bikes and i think the racing would be just as close and exciting if the factories did back it plus it would open it up to more privateer teams, lower costs, bigger grids and more people could relate to it, as it is WSB is simply a half way house between MGP and real world bikes
Personally I prefer one or the other, if its development go down the MGP route, if its production based make it that , the good teams and bikes will still come out on top. If they want to make it real interesting they could throw in a minimum number of hours race use on each engine just to get the manufacturers considering what owners have to think about as well
FIM SBK tech regs attached, check out what can be modified and what can't, you'll not find many bits that can't.....