[RichC 911T]

The SC engine doesn't come with headers or an exhaust so I was thinking SSIs (I'll need heat in the UK) and a Dansk 2 in 2 out sports exhaust.

As for cams, valve/piston clearance looks to be the limiting factor so I'd be looking at 964 or 20/21 cams with the stock pistons.

What I'm not sure about is whether I could use the SSI headers and piston friendly 20/21 cams with the eventual 3.2 SS build? Well, I'm sure I could use them but would they end up being a bottle neck on performance and defeat the object?

I've read elsewhere that SSI headers aren't generally recommended for a 3.2 engine, although that was in the context of a later carrera 3.2. Would this set up be any good for a 3.2 SS?

Similarly if I get new 98mm pistons and cylinders later down the line that would open up options for a more aggressive cam choice. Would sticking with 20/21 cams in a 3.2 SS build be leaving too much on the table? This will be a street driven car so I'd like to maintain low end torque if possible with cams that still give a reason to take it to the red line. A broad power band appeals rather than something that's completely flat below 4000 rpm.

I might well be asking the impossible and if the answer is that I need to choose appropriate cams for the given set up rather than trying to second guess how hot SC cams might perform in a future 3.2 SS rebuild then that's fine. I'm sure that a 3.0 SC engine with itbs/efi and 964 or 20/21 cams will do nicely in an early car in the meantime!

Rich