Couple years ago I had my 4th gen H22 rebuilt. S pistons crower 2's etc etc dynoed 201 on a mustang dyno. Car still runs pretty good 2 years later but now next summer will be the 3rd year and I'm thinking of tweaking a bit maybe getting it ready for some auto-x. These are some ideas I've got running through my head when I get it out.

1) Rim swap. Take off heavy 17's and go with 16" slipstreams
Question: what tire size and offset is best for this size rim?

2)Tune up. Has not been tuned up since build. Thinking wires,plugs, clean filter, fluids.
ANy other recomendations?

3) Last but not least, manifold swap. Changed to a Greddy Header last year and thinking of throwing on a skunk intake manifold and retune on dyno.
Question here is what is the data on the manifold. We've been waiting here so long for this manifold to come out but from all the searching I've done on this site I can't find any real dyno numbers or good threads on this topic? Please don't kill me for asking this I know its an old topic but I can't find any info.