For anyone considering a Miata from whatever generation......I cannot recommend them highly enough!!!!
If you do indeed go that route Miata.net is a phenomenal resource. After many posts asking for suspension advice I finally called up the Guru Himself:
Mazda Miata MX-5 Performance Projects (Motorbooks Workshop): Keith Tanner: 9780760316207: Amazon.com: Books
Keith is an incredibly approachable guy, at least that was my experience.
I called Flyin Miata, asked for Keith, I told him what I had, what I wanted to do with it and he recommended specific packages. Give them your CC # and all is well, at least it was for me.