[Walt Fricke]

CIS is really a very good street car induction. And, as you have realized, what you have is actually plenty of HP for sane driving on the street.

But remember, if you get the '77-8 or Euro 3.0 heads with the bigger intake ports (or have your head ports bored out), you will need the larger runners which go with the ports if you keep the CIS. And (though not 100% certain on this detail) you will need the early/Euro air box, because I believe the larger runners need a larger attachment at the air box end of things.

While there is some pizzaz to a 12 wire distributor, the crank fire systems are by far the better mousetrap. You could probably pick up a pair of early Electromotives used for less than a twin plug distributor, and have money left over. And there can be bargains on some of the older, less fancy, EFI systems. I am running Electromotive TEC3R on my race car, and it is about two generations old. But worth the savings, and it has all kinds of tuning features I don't bother with (part throttle? a pox on it. Smooth idle, naw).

Or you could try the DIY special - Megasquirt. A friend just put one in his 3.0, and loves it. If he had put in a hotter cam and twin plugged his heads and used higher compression, I am sure he would love it even more. There is a whole cult/support group out there running/trying to run/working on the MS for 911s.

One issue with higher compression (and a slightly hotter cam) tends to be the CIS. Yours was designed to work with the 3.0. Yes, more air through it (as in faster accelleration) ought to cause a proportionately greater flow of fuel. But there isn't a whole lot of tuning you can do with CIS. Richen it overall with the adjuster. Boost the system pressure with shims in the pressure control. Fiddle with the control pressure regulator to reduce control pressures and richen things more. I suppose these fiddles may work better than trying to make a 2.4 MFI work with a 3.0 motor or the like. But something to think about.