isn't it also the case that using the 4 door dc's (db8?) lower seat allows you to minimize/eliminate the gap at both end of the seats, closest to the car's sides... as opposed to the 2-door dc lower seats which is not as wide...
so i would strongly suggest you find the 4-door lower seat cushion and pair it with the 2-door upper cushion for best fitment.

if u have the cash... check this out -> http://hondamarketplace.com/showthread.php?t=2524030

wish i could buy those red rear's! my whole interior would match