Whoa! Last I knew the 9405 XDF didn't exist! Thank you for the heads up about years, too. How do you determine if it's 2003 or 2004+ if you don't know the vehicle it came from?

I just tried it out and made a few edits. Looks like it works! I'll flash it later and see how it runs.

Strangely enough, I had tried to make some changes to a 4.3/auto 7604 tune to make it "manual" but it gave me a checksum error.