You can run a ducati 750 (SS or Monster) in clubman and be somewhat competitive under superstock rules, ie no valvework or bigbore kits. You can also run lightweight twins but the SV's will stomp you. You NEED rearsets and to get your cans up or you WILL highside yourself. You can get bellypans from farracci or ducati. Have your suspension redone or replaced, can replace rear and revalve front for wera superstock. For safety wiring requirements or anything else go to wera.com and rtfrb.