hey there Ken,
I'm new to this forum and the thread regarding the gearset for an Eaton axle was what I was looking for... but after I read through all of the postings it didn't seem you found what you were after... so , since then, have you found anywhere to get a set of 3.73s for an HO52 (or 72) ?
I'm running a 1972 C20 and would really like to find some longer gears for it...
Please let me know if you did.
Cheers,
Dan