Converting to Smooth Tubes

I have a 2002 GTS Viper, and converting my current corrugated air tubes to the "smooth tubes". The chrome smooth tubes are my first choice, but if not available, my second choice are the bright red smooth tubes. Any suggestions for sites offering the best price? I'm also interested in installing the rectangle-shaped K&N panel air filters, but open to member's suggestions on other brands that may work as well or better! Thanks in advance for your suggestions!