Velox

I have recently taken an interest in the 3rd generation of RX7s. I've been looking at some used ones and can say I have finally found a sports car that Im confortable with. I have a couple questions though :

1. Are there any unusual things I need to look out for when buying a used 3rd Gen RX7?

2. Im planning to do some body work and performance upgrades. Where can I find a good selection of body kits and tweaks besides the obvious Veilside and Erebuni?

3. Im not very familiar with the care of a rotary engine. Is there anything special that I need to know? Which parts should I be especially careful of?

4. Anyone have any stories or lessons they have learned when dealing with used RX7s?

Thanks for all your help. I hope that I can soon be driving the beast I've been dreaming about!