not many bits from a 650/750 are compatible with the later 1000's mate. But a lot of the earlier 900 and 1000 bits are. The inner rear guard from any 1978/79/80 Z1000 will fit your MkII frame. Best bet with the tail light lens is to buy the best 2nd-hand one you can find. I have not located an aftermarket supplier for these lights yet. You can get a lot of aftermarket bits for these bikes - but not rear lenses
Heaps of bits for old zeddies on ebay, it has been like this for a few years and literally thousands of items get listed every day on US ebay. This is where you find the best bargains. Some of the prices I have seen for aussie Ebay stuff for zeds is just literally insane. eg - a couple of weeks ago, some fucktard listed a pair of black fork leg lowers for a MkII. Nothing special about these not rare not hard to find - just a pair fork leg lowers. He listed them at $600 the pair !!!!

no they didn't sell. What a retard. Normal price on something like this would be around $50 the pair.
Getting it up and running first is a good idea - just to make sure its all OK before a strip and re-build. I am a big fan of powdercoating - its a great finish and very durable. For your frame and swingarm a powder coater should be able to blast and coat for around $200. Pretty cheap starting point for a good clean rebuild ..
