[deftoned]

140 from two 8's? Sounds sweet.
What setup do you run in your car?
My setup that I have at the moment is Alpine deck, Alpine DD Drive Splits and Co-Axials, 2x 15" Rockford Fosgate subs,
2x Rockford amps and an Alumapro cap.

In my car at the moment I have mostly sony gear - 2 x 6in splits, 2 x 6in 3ways, 2 x 6x9's, 2 x 12in P5 subs, a 1 farad cap and 800 WRMS amp. I'm waiting for the subs to blow (don't know why they haven't???). The build happened in stages, so nothing is that flash, Ive done all the work myself with no training - it's just an expensive hobby, like trainers. I've focused on boosting the whole signal, rather than having just loud bass, when it is right up it's not distorting and you can still hear the song.

Next build for me will be when i get a new car - more towards sound quality, but I still want it loud

The 8's we're gonna use are RE subs from America, my mates mate imports them - his car does around that on his 'fun' setup, he has a serious setup as well, several thousand WRMS into 12's... it's nuts, you can see the panels of the car move a ton