GM I'm using two 6" ports on each side will the length still be 4" or will it be longer ? I figured the (CSA) of the two ports to be 56.52" Thanks !

These port tubes are 17" so can be cut any length, I guess I can tune them when I get them home.They should be delivered by end of week from Parts Express.And cabinets to follow middle of next week they should be a done deal.

Precision Port 6" Flared Port Tube Kit | Parts-Express.com