Trying to match ELR body style

Hey guys, new KZ owner. The bike in the black is how she currently looks. I found this other picture on this forum (sorry, forgot whose bike this is), and I'm looking to replicate this look. Do you guys have reliable outlets to find the tail piece and different seat? Corbin doesn't show anything for my year.
(1983 KZ1100A)

EDIT: Also, if certain years/models are interchangeable, I'm open to suggestions as well.

The ELR is mine. Not sure how much work it would be to replicate the look on a 1000A though. tail pieces are on e-bay all the time. search KZ1000J, GPZ1100,GPZ1100,KZ700, KZ1000R, KZ1100R.The ELR seat can be recreated with a stock KZ1000J or R seat or a 81-82 GPZ1100 and a ELR seatcover from E-bay.. Good luck

Thanks, Barney. Your bike looks fantastic, by the way. I had the 2002 ZRX1200 with that same paint scheme, so looking to go back.