Good choice on the MSP!! Welcome to the forum!!
There's lots of good info here, visit the Forced Induction area and the Rims/Tire/Suspension area, more info than you can absorb in a day. Lots of choices available so it's kinda hard to just say, here, look at this site or you should get this, ya know? Depends on how far you want to go with your mods...
Here're some to get you rolling:
Suspension: Racing Beat, Eibach, Skunk2
Exhaust/Induction: Spoolin, Flyin Miata/Protege, Magnaflow
I'm sure there are many more experts out there than me... Enjoy this forum!