i just bought a suposivly 1999 wr 400. the frame number is not on it. what is the number suposed to be for a 1999 on the engine, i didnt think too look before i left my bike at the cottage. also the silencer isd broke off. what silencers are cpmpatible with the wr 400. could i say use a yz 25 silencer. also plastics, i need all new plastics. what plastics are compatibvle with the 1999 wr 400. im talking everything radiator shrouds, e side panels,.oh ya will the rad shrouds fit my oversized gas tank. and what kind of spark plugs do these take and how the hell do i get the thing out, its burried.what tools did you guys use.