Help with Holley Stealth Ram and intake filter

[Chevy]

I'm putting a Holley Stealth Ram in my '68 Camaro and need a way to put a filter on it. The throttle body is ovalized so although i could fab something up i think i need to buy at least one rubberized-type oval connection point.

Ideally i'd like something that flows a lot of air like a K&N type filter, and i'll redirect it to someplace with cold air acess. Possible to the battery box area since the battery has been relocated to trunk.

Something like this system on ebay:
http://cgi.ebay.com/ebaymotors/ws/eB...249520747&rd=1

Anyone here done this in first gen Camaro or Firebird and has input for me?

Thanks!!