yea friend i used to run.. a soundstream 405s at 1ohms and 2 JL 12s.

you could feel it before you herd it coming down the street

you coulndt talk to each other in side my landcruiser. It would distort your voice waves...like talking into a fan....

I back the JLs for sure i would have to study about your buddies amps.

ps some bitches stole my system 2 times out of my cruiser. just the back window in that thing was 650 bucks.