assuming the mfg date was 9/91 or after. But now that I know it was manufactured 7/91, that makes my front clip a late 1991 model year, not a 1992. Knowing that, now I won't end up with the wrong rear main seal :-) Now for the fun part, pulling the tranny. At least I have a hoist, & I just got a new tranny jack to make it a lot easier job.