Where should get my parts??? HELP HELP HELP HELP

I need Cat-back(quad tip, like the stock),down-pipe,boost controller, turbo timer, injectors, fuel pump, Y pipe, cat convertor, Intake.

What are the best brand that i can get for these parts and where????

1997 Mitsubishi 3000GT VR-4.

www.3sxperformance.com
www.importpoweronline.com
www.horsepowerfreaks.com
www.dynamicracing.com

I don't know of any aftermarket quad-tip exhausts. ATR and Borla are two of the best exhaust catbacks.
As far as downpipes: http://johnmonnin.netfirms.com/Downpipe.html
you can decide which is best for you
Boost controller comparison: http://johnmonnin.netfirms.com/Boostcontrol.html
Intakes: http://johnmonnin.netfirms.com/Intakes.html

As far as the y-pipe, just make sure it has flared ends, so that it doesn't blow off