Are there choices for these?
Is it like intake runners on an americun muscle car where the longer the intake runner the more torque?

You have the concept.

Porsche did a very good job of figuring this all out for you.

We have played around on the dyno with the stacks and didnt find much difference. Some of our engines are on the ragged edge so we are always looking for that n'th degree.

My .02: leave them alone... maybe get some air cleaners.

B

Mine aren't nearly that shiny. Does that help?

If you get rid of those, I'll take 'em.

At least the coil is yellow. That will add a few HP
Mark S.
'70 914-6

I got cleaners, they just don't look as pretty for pictures as the bare carbs.