I GOT an aq sdc 2.5 10in d4. in a ported box. 1.25 net with 25sq. in. of port tuned to 38hz. I only got 275 watts on it. It sounds great and is decently loud in my reg cab s-10 blowthru. but is it possible to build another 1.25 plus port,say 40 inches of port tuned to 40 for higher output since im runnin so low on power for now?