1-Engine management - COBB AP -> Pretty much the same price as ECUTek but includes free tuning software if you want to try to self-tune or make tweaks to a map provided by your tuner.
2-Header combo - No idea
3-Up - Stock STI or GrimmSpeed
4-Dp - Maddad whisper TBE
5-Cat-back - See 4.
6-Suspension - KYB AGX (or GR2) with RCE Yellow springs
7-Rims and Tires - anything narrower than 8" wheels and 225 wide tires. 8" + 225 tires are a recipe for rubbing.