I haven't done much to my MX-5. It has the SE package with leather.
I'm not much for the bling factor, I just want the performance.
It has Bilstein R package shocks. Much stiffer than stock.
I put 205/40R 16 Federal SS595 rubber on 16" Core Racing Super Lites.
The Federals were a little cheaper than other brands (under $200.00 Canadian) but sure are sticky. The ride is choppy, but . . . oh . . . so . . . crisp
I'm all about the handling right now.
Let me know your subjective thoughts about the new header and exhaust. Maybe I'll have a summer project.
Saskatoon, Canada today: -7 degrees celcius. It's getting warmer.