rough idle
 

I have a 1994 'stang vert 3.8 v6 and i need to know the firing order on this coil pack. facing the pack from right to left are wires 132 and back is 465. and tell me if i am correct that the right bank from front to rear is the number 123 cylinders and i have the 44EE platinum plugs gapped 'bout .052 (came with car) if they are the correct ones to use
I have a smooth idle ('bout 600 rpm) but when accelerating motor shakes and backfires through the exhaust when i change wires 1 to 2 2 to 3 etc. gets worse