jin man, you're killing us. if you go to Metra or bestkits (2 major car audio accessories manufacturers) they both use the same final digits. the 7550 is the wiring harness from metra the full part number is 70-7550, best kits bha7550. antenna adapter baa9 (best kits) I dunno metra's part number for their antenna adapter. but metraonline.com will tell you. pac swi-x is the right steering wheel control module for you.
CAn I ask you a personal question... how old are you?

 

Thanks alot for your help "troysG".! You know your audio stuff.! Im good with all electronics except for audio. but im learning alot from this forum. Im 25 years old right now. I should go to a audio shop and get some info but I just don't got the time to do that because im always at work and school.

 

not gunna lie man you'd get a lot more information in a shorter period of time talking to guys at a shop. If you're still fuzzy on some things or if they weren't really clear come back and pm me, I'll try to help ya out - gotta quit thread jacking though