let me help you out here.

you dont want a 160, you want a 180. 160 is way too cold.

send those msd coils and wires back. they are both problem prone and will fail on you. Stock coils and wires are best.

as for spark plugs, buy some autolite 605's or 104's copper cores.

and the electronics in the air box is the PCM (aka cars computer) is weather proof and shock proof, nothing will harm it so leave it out.