For what it's worth, back in May 2020 I ordered 9 1/8 clutch NCF 1104123 from Napa. It came in a Napa branded box but the clutch and pressure plate were stamped LUK. My parts spreadsheet shows NCF 1104123 and next to it has LUK 04-123.
The Luk 04-123 is a lot less expensive from Summit or CarID or Carolina Clutch than it is branded as Napa (go figure).
Last edited by stlcardinalsguy; 10/30/2021 1:36 PM.