John XS550

That website doesn't like the code I got off the bike - it wants a 17 digit code So I'm still no wiser as to what on earth I've got !

I've just acquired a bike as a restoration project. It is an inline four cylinder twin shock with the code 5K5-023793 on the engine casing and the headstock. It is supposedly an XS550 American model. So far trying to find a website which would let me put that code in to help identifying the bike has thrown up nothing so any help folks? The bike was given to me free and has new shocks, sprockets and chain. It has a bad streetfighter look of gold frame and purple bodywork with a chrome rear mudguard. At the moment before deciding what to do to it and what look I want I need to know what I've got. Cheers John PS. on the clutch side it says 2200cm3 !!!!