I've got a '69 Bronco that I'm considering putting fullsize axles in, they're a whole lot cheaper to come by. I don't know the statistics though, reverse cut, high pinion, 9 inch, D60, D44,
etc... I will not go higher than D60 most likely. What's the best rear 9 or 60? I've also noticed that buying the whole truck with bad engine seems to be cheaper than trying to just get
axles, what years should I be looking at? F150, F250, and up? Sources anyone?

This may help your decision - Go to the drag races, car shows, etc., you will see many vehicles (any make or model) using a Ford 9" 3rd member. Also most NASCAR vehicles use a modified Ford 9" 3rd member diff. You can pick one up from an early truck, have the tubes and axles resized, or even put larger axles in the housing. I have even seen one modified to be used in the front.
Check your 69, I don't think it will have 31 spline axles, but Curry makes a conversion kit to make it a 31 spline axle. You should also install a set of 4 spider gears (stock is 2). This can be a weak link with over 300 hp and/or low gearing. I am currently running the stock setup (28 spline) and have a NP435 tranny, 33" tires and 4.11 gears with limited slip. I have blown the 2 spider gear setup several times, but never trashed the ring-and-pinion, or axles. A set of lockers will greatly weaken this stock setup. It all depends on what you are doing with the vehicle.
Curtis

I can set you up with a 44 front and a 9" rear no problem. I don't think you'll need a 60 unless your'e usin' some really big tires or lots of horses under your hood.

'95 Frod Ranger, 347cid engine, NP435/Dna 20 (3.15:1 gears), 4.88 Powerlock Dana 44 front, 4.88 Strange spool 9" rear, Wrangler springs in front, 38X15.50X15 TSL Swamper Radials