Correction. MX0 is just the RPO for the Automatic transmission it looks like.
The RPO KD1 does appear to be the correct code for the trans cooler but I see no KD1 or anything of a description of a trans cooler in lt4camaro's build sheet.
I also looked on the build sheets of 2 local LT1 cars and they do not have the KD1 RPO codes either.
