You can search Ebay for Top Speed Exhaust. It runs around 3-400 with out the y pipe. The y pipe will run you around 200
ERZ has HFC for about 330 shiped
and you can get some K&N Typhoon Intakes for around 300 shipped as well or you can spend a little more and for about 549.00 you can get some Stillen Gen 3 Ultra Long tube intakes
Top Speed Exhaust - $467.00
Y Pipe - $200.00
ERZ HFC - $330.00
K&N Intakes $309.00 Or Stillen G3 - 549.99
Thats around $1,300.00 Or 1546.00 With Stillens
Do some research on these parts around the forums. You will find more than enough info
Thanks!