This. Send me the measurements and ill see what I can come up with on the sketch. And a T-line box need a huge room to work with.
Edit: on the amp part, how much are you willing to spend? Because a cheap price of an amp often means a cheap amp like that power acoustic you have....unless you struck a steal on a cheap price. There's many other good companies that make good amps. Sundown, DC audio, crescendo, degital designs, including DB drive, audioque, audiopipe....many more. If you catch a hifonics amp, get the Brutus(bxi) series amp.