anybody here ever used dynomax long headers? i was thinking about getting some for my /forums/images/graemlins/k5.gif in the next few weeks, along with there dual exhaust kit. all of this will only cost me about $270. so it's not a bad deal, at least i don't think so considering that of all the other long tube headers i looked at, the next in price are about $250 just for the headers. also, i know that for low end torque i need smaller primaries, but what size would be good for that?