Nice! My mom used to have an MX5, the NA-model that is. Superb cars in handling and a huge "fun-factor"!
And I think you're right, 17s are cool, but I don't wanna risk bashing my fenders (a.k.a. "fenderf**king"...) on each and every speedbump/roadbump, and believe me, here in Holland we've got plenty of them...
Now it's just a matter of good searching and getting the right tyres on'em.
tomorrow I'm going for de-cat, I'm gonna replace the cat for a straight pipe, just need to find a way to fool de O2-sensor...
And I'm gonna cut open my rear mufler and take out al the damping. I already removed my mid silencer, but that makes as good as NO difference.. I'll probably post some pics of it when I'm done.