zed1015 wrote: That's definitely a Unitrack frame stamped with B numbers and the engine with earlier B numbers also.
Unitrack and B frames are different .
The Uni has a full cradle that loops from the headstock around the s/a pivot and back to the headstock with weld on subframe ( which can be seen in your pics) where the B frame is like the earlier KZ with the cradle extending to the rear shock mounts and then the top tubes extending from the headstock to the swing arm pivot.
Unitrack engine numbers start at - KZT10BE- 037201
And Frame numbers start at - KZT10A -015901
Begrudgingly agreed Zed, after a long close look at the pictures i have and the now glaring fact that not only is it a Gpz1100b number on the frame but its an engine number too, it has a "E" in the vin where the frame number doesn't. Ill use it as a parts bike, i still got it for low money and the shipping of 200 euro door to door, cant blame the kid who sold it . He had been riding it for 2 years insured in Poland so im sure he was oblivious. The bike was/is going to be my new everyday bike. A nostalgia build to remember by best friend from my youth who died of cancer 12 years ago when i was away and living in Canada, we both owned Gpz750's and thought we were the dogs nuts. The Gpz1100 is still a rare bike here in Ireland but not in the UK, there are frames available both USA and UK, ill hold out for a UK title 84 and matching cases and blank the frame number out again sell it too someone with a twisted legit frame. A little more cost but not any more work with the plans i have for her.