iirc you can run the coil packs on a stand alone unit, but the real beauty of fi on these engines is street ability. Even a very mild cam will be difficult to tune carbed because the type of hyd roller cam used by nature has a lot of overlap and reversion. Just stick with fi imo.
LQ4 Short Block - MSD Ignition - Car Craft Magazine
This article has some good info on the subject.
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