Ok, I have done the measurments for my truck and i should be able to fit 2 10" icons in my truck. They will be in a 2.5ft^3 box after driver and port displacement. I used the calculator at carstero.com and it says that i need a ~8" diameter port for the box tuned to 30 hz. Would that be a suitable frequency for that size box? If so the only opitions for port size is a single 5" port 27" long, or two 4" ports at 20" long? The single port will be on the driver side firing into the side of the cab, and the 2 ports will be on either side of the box. Will ports that small be choaking(spell check) the air flow, or will they be fine? im leaning towards the 2 4" ports though. Just so everyone knows, i listen to all types of music, but mostly country and rap. Ill have a drawing up in a few minutes to show where i will put the ports.

thanks for any and all help.

What size should i go, it will be either 1 5" or 2 4" ports