Firing order on a K series...
tricky compromises to be made on the filter side - power increases can be made at the sacrifice of throttle response. I think I prefer a more responsive throttle to be honest, and having had discussions with Sensei Iddon, it seems like a mutilated standard box is the way to go - running through a suitable panel. Best idea seems to be to use a greater diameter feed into the box from the sidepod ... or if you're crazy, go for a multifeed to the airbox ala MGTF ... where you get the other feed from I leave up to your imagination 
Ferrari 458
Porsche 993 C2
Disco V
Porsche 993 C2
Disco V