you cut the hole very tight no sealing needed! later i did put hot clue around the base of the ports but made no differnce the box is not coming out anymore
ive seen two ssd 12's do a 145 144 on the tl with one american bass amp 150.1 in a ford focas street b set up the speakers did get a lil warm and smell after the guy banggin it full tilt for a few mins
i have a set up like that in my 62 chevy i made a bandpass 4th order and ported it threw the rear deck as long as the port gos a lil over the rear deck only an 1/8 inch needed should have no problems i didnt need to seal off the trunk for it being removeable i used 4 inch tubes made them a tight fit slide them out the box comes right out