The first half of the photos are 1989+ exup fzr1000. the gearbox if 5 speed is also. If 6 speed is 750 gearbox which is often put into the 1000 engine for closer ratio racing. The thurnderace engine is mostly the same as exup fzr other than the 1989-1990 motor has a oil filter cover(ally) then after that and into the thunderace is a turn in oil filter.
The black parts are likely 1000 genesis or 750 which would match if some gearbox swaps where done for the sidecar. Maybe the gearbox is the removed one from the 1000 and the 750 box is in the sidecar motor.
I have evolved as a KB member.Now nothing I say should be taken seriously.
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