dual pick up distributor

So when I scrapped the old cop car 1982 diplomat .to my knowledge ( I was gm mechanic for 20 years at a dealer)I did not see the lean burn system on it . what remember from day gone by that it was I the air filter housing and had a vacuum to it, I took the wiring harness from the car, and did not see any module . may be the guy I bought it from removed it all
any way the pick up in the dual distributor is just a pick up coil that triggers the ignition , I looked at the original dist from the points model from '67 . the weighs are the same inside
the only diff is the advance springs . but I have a mr gasket set to try when I go get it curved.
I was just wondering if anybody has just replace the pick up with a single one or just used the dual one. the only thing the dual one does is work on start up . so I would just leave it unplugged, or just buy a single pick up and use it in the place of a single one.