I have a 2005 V10 truck, 4x4. Back when I got the truck I read a builder's guide and it said the V10 trucks had the Super 60 if they had the 4.30 ratio. I wasn't sure if that was the case or if the Super 60 was a F450/550 thing. Anyway, today I was checking out the part numbers for the Dana axles and sure enough it lists the front axle (differential to be more precise) parts for a F450/F550 as the same as the F250/F350 with 4.30 gearing.

Just figured I'd pass it along because I always kind of wondered if it was true/correct that the differential in the 2005+ trucks was a Super 60 (with 4.30 ratio, V10 or Tow Boss truck). It's not just in the Ford builders guide, but it's listed that way in the Dana parts catalog.

So, those with the 4.30 gearing got a Super 60 since 2005 (the 7000 lbs axle as opposed to the 6000 axle).