I am planning on replacing the 4 with a 71 2.2T engine. Here comes the dumb question.

Do all air cooled 911 engines have the same spacing between the exhaust manifolds, in other words is it a case that the 6 headers fit all engines?

Thanks

I may be wrong....
but I believe all 2.0, 2.2, 2.4, 2.7, 3.0 and 3.2 have the same spacing.
3.6's are different.

But I may be wrong. Someone else may know that answer.

They all have the same spacing, including the 3.6.

Correct all the same.. I will have a group buy starting shortly for 1.625 heat exchangers that. I will post on this board.