Now; as to your 9.4 Scr; you said;
I googled Skaget and get elevations ranging from zero to 5740 ft. but typically 3400ft.
If this is correct;
then you are gonna have to be careful with cam selection, so as to get an altitude-compatible cylinder pressure, at 9.4Scr.
That is to say, the stock 318 cam has an Ica of about 50*, and is predicted to make around 152psi@3400ft which is great. But; If you take that car down to sealevel, the pressure is predicted to rise to over 170, but at 5700ft is just 140. That 170psi in an open chamber iron head design, is usually iffy to operate even with 91 octane gas.
The smallest performance cam that you might consider is likely to be around 262 advertised, which you might install at an Ica of say 59*. This is predicted to drop your pressure to 140psi@3400, 158psi@sealevel, but just 128@5700
So keep those things in mind. Or maybe you already have......... IDK.
You can mitigate some of that gross pressure difference by
1) not taking the car too far from it's home base, or
2) using a solid-lifter cam-design with fast ramps. Also,
3) alloy heads will like more pressure.
