There is a bunch of tuning options out there. The most popular is going with a SCT hand held tuner or a flip chip. If you go that route PM me and I can give you my tuners number to call.
As for headers, I’m sure all the major brands have something. You’ll just have to research. I’d probably say MAC or BBK would have something.
Intake would depend on heads and cam coupled with future goals.
NA 302’s really don’t benefit much from tuning until you get into some serious power levels. Just set up fp and timing by hand…hit the track on a test n tune night.
For headers, try to find something with a one-piece flange…makes install MUCH easier.