I've looked into this as my company is now offering a Buick CnP interface board. The board allows the use of the stock ICM (type 1 or 2, regular or quick-start), to fire CnP setups.
The issue with CnP mounting is that every engine is different. Breathers, valve cover style, vents, oil fill, A/C or not. This all makes mounting the coils needing to be in different locations.
We've found that the best way to go is to use inexpensive valve covers and mount the coils directly to it. Can also use expensive VC's if you are going to stick with the CnP set up. Note that the CnP ignition set up is amazing.
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