I did a 131 with a single level 2 12. It wasn't in a very ideal box and was running on about 275 watts. Still not too shabby.
thats not that bad at all im gunna be running 1 level 2 12 in a 1.75cubes ported box, probbly gunna give it around 450 watts, ill be sure to post what it hits on the meter
my buddy has a lvl 3 15 in an ext cab dakota and does 133.7 @ 40hz and around 100rms, on the TL sealed.