Ignition coils posted by chi town road runner on July 16, 2018 at 09:39 AM
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Off an LQ4 or similar. They fit with some modification, the down side being you have to pull the plenum to change spark plugs. But they are supposed to be better in every way. I still have my originals on my 6.0 GMC truck at 190k miles.
However, I would assume it's not a necessary mod unless you are running pretty high power.