r6 engine & akra Rota grid wheels in black New paint job (gun metal) Renthal bars Decent streetfighter headlight r6 clocks & controls bar end mirrors Wouldn't be cheap but would be fucking immense.
Don't worry about the mounts - it's not a big job for a metalwork shop to cut the old mounts off and weld new ones on. Have you considered a 1,000cc Rotax engine from an RSV Mille? They're pretty compact and I imagine their torque would go well with a quad... More common than a Dominator too so parts are readily available on ebay for not many beer tokens.