[dd74]

I run an '83 with what I'm told is backdated F.I. from a 78-79. The Lamda unit was never installed with the engine. If Lambda assists in cold starts, a hand choke from a 2.7 works just as well - gives you something to fool with while the car warms up.

I don't know how hard it is to adapt older CIS from an SC to a newer SC engine. If you do that, though, also adapt the heads from your 78 - they breathe better than '80 heads.