As j911brick said, better off with a complete, titled bike to start with.

If you need parts there are a few internet based company's doing parts including this very site! Also, tygaperformance.com is an excellent resource for all parts nsr. Im sure a bit of phone ringing should source parts from the wreckers, and the classifieds section on this site is a fantastic source too. Ebay has a heap of parts also. These bikes are far from extinct yet, parts obtainable!

hope this helps....
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........."I love the smell of 2-stoke in the morning.......Smells like victory"............

MC21 Pentax SP...... TYGA'D