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the lfr6a (ngk 6668) is a better choice as they are already gapped at a turbo appropriate 0.035"
Do you mean the lfr6a-11 vs the lfr6aix-11?
The lfr6a-11's have a 1.1mm gap on them.
I was already planning on getting the lfr6aix-11 (listed as ngk 6619).
I guess summit doesn't carry those in specific...
Just trying to pin point this, as I'm getting ready to put the car together and a summit order is due shortly.
03-08-2012, 05:21 PM
