Quote from: 68stangcjfb on October 19, 2022, 06:01:34 AM
I assume you mean 68 Cougar with R & W code. I can see the early W code cars getting them, but R production started in February 68. Maybe some Mustang 135 cars got SPEC cases? They were built late December 67. About a week or so after the 7L20 and 7L21 no N nodular cases started getting made. Just for reference, my May 11, 1968 Torino GT R code fastback has its original 7M21 case with 31 spline 3.91 trac lock.
I don't know when the non-SPEC Nodular started casting, but I have one dated "7F2."
Does anyone have a pic of a one of these Nodular with no fill plug? Otherwise, I have a hard time believing they exist. The timeframe for their use would be so short and the applications so limited that I don't think Ford would've bothered.