The 3rd generation F-bodies don't use what I would call a "high-offset" spindle or wheel, hence the need to run wheel adapters when running high-offset wheels on such applications. You may be thinking of the 4th generation (1993-2002) F-body applications.
IIRC, the 1LE rotor has the same track width per side relative to the inner wheel bearing than the smaller 11" brakes used on your factory Nova setup. The 1LE rotors will require a SET3 outer wheel bearing, so only the .844 diameter spindles will be compatible if you decide to go that route.
Tobin
KORE3
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