I found these spares, which were for my (circa 1993) Bombora 283. There’s a powerbox-style fin box, alloy top-plate and pop rivets (for the fin box), and a mast track. The mast track secures with 5 bolts; I believe that some versions used 3. The alloy plate has some stress marks; the other parts are unused.
These parts also fit the 270 and the 295, and probably the X-it (not sure about this).
If you have a use for all or any of these, PM me, and I will post them to you.
Are you sure the 93 Bomboras used powerbox fin boxes? I thought that happened a couple of years later. What would a modern Bombora be like?
I think Tom Luedecke designed the original X-it along with the second one. I never owned an X-it but always thought they were the ants pants. Eventually I bought a Zot which was a cool board with the roo up the front. Then bought a 260 which was a radical speed board, still got it too but its bent out of shape. Then bought a 270 which had a similar plane shape to the 260 but was a much easier board to sail.
Love Australia boards, my most favourite board is a Bombora proto. It was quite short and wide with a step tail, awesome board to gybe, miss it heaps. Pity Bombora still making windsurfing boards but I guess there is no money in it.
I've still got an X-it I bought new in about '95 (could have been old stock). It was the squared off tail design. It only had a US box. Fast board in a straight line (I think 55cm wide) but hard (for me) to gybe.
This thread brings back memories
Had a Bombora sometime in the eighties, recall it was called a "Big Toy" or something similar
Anyone remember this board, it was quite small (sinker) and I recall finding out that when you had the choice between waterstart or swim you learnt to waterstart real fast
I think you'll find the Big Toy was just that, a BIG board. It was the Bombora raceboard at the time. You may be thinking of an Antarctica???? It was a sinker waveboard. There was also the New Toy which was a waveboard but not nescessarily a sinker for some people.
My first shortboard was a Bombora Tri Fin, followed by an Antartica.
Only threw the Antartica out last year. that was a sad day 
I have good memories of sailing what was probably the first non proto Bombora.
It was a weird shape then and would be now. The mast base was a long way back, I guess that made tacking easier. I remember that it delamed after about three months as did all the other bomboras I owned.. a Trifin and a New Toy.
Al
