keep the woofer, change the box.
t2 is a good woofer. i had a t1 10 compared to a t2 10 to a bl all in the same box, same day, same power. the t1 got owned by both. the t2 and the bl almost sounded the same. actually the t2 was a little smoother sounding. then again, these were 10's and the t2 v/c changes to a 4" for a 12.