I'm glad I'm not a partsman. The catalog I looked at shows both the 6320 and 6420. If you look at the 540 only pto housing, it shows as 6320 only, but almost all the other illustrations for the 540 only parts list them for both models. My memory is that the 6420 wasn't available with 540 only, but I can't remember if there was a deduct option somewhere.

It's possible someone swapped the housing with another tractor for some reason. There may also have been a hidden code where you could special order the tractor with 540 only.That would be rare as the cost of the custom code would eat part of the saving of the 540 only deduct option.

Well, I'd better get to enjoying this holiday Monday.