A couple of interesting air filter comparison links.

[rvitek]

With the SLS, I keep up a little bit on the Caddy boards and came across these links comparing the stock airbox setup with a cone filter. The guys did it with two different Northstar engines and dynoed each step of the process.

Enjoy

http://caddyinfo.netgetgoing.com/airboxvscone.htm

http://caddyinfo.netgetgoing.com/dyno/4airboxtest.htm