It is a hitachi carb. Does it have a anti-diesel solenoid? The A12 96 primary jet and 136 secondary will be too small, you need 104 primary and 140 secondary. You should be able to find jets in a sunny with a A14.

Stick with the original air cleaner assm.

As for p/no's, do you know if its a hitachi dizzy or lucas, points/condensor and other bits differ between the two. The breaker plate on a lucus is riveted and the hitachi one is screwed on. The hitachi dizzy is a much better unit.

NGK plugs BPE5S