I guess I'll chime in seeing as it's my truck.
The 3.0 is a damn dog even on 29's with 4.10s. It's a horrible motor for a truck. Sure, shove it in the taurus and sable and mommy vans but it's asking a lot for a truck.
It's just not designed for crawlin. The high revs are great for the mud bogs, but the powerband is just so high I'm not a fan. And there's no damn mud in CO.
I bought my axles when I was 17 and didn't know as much as I know now. Should have held out for tons. As I learned, I developed the belief in not polishing shit.
I've planned on going tons or rocks down the road. Why invest a grand in gearing and polishing up some half tons when Rocks sell for a grand a pair around here?
Why rebuild a 3.0 when it's still a 3.0 in the end? Yeah, blow it. Ok, 2 grand down the road it's still a 3.0. Yeah, stroke it. Ok, 3 grand down the road it's still a 3.3.
Why drop it back in with I can shove in a beefy 351?
As far as the axles go: I try to practice the "Don't fix it if it ain't broke" method. Well these are 30 year axles that are fatigued from 30 long years of abuse. I replace things as they go. I could drop a ton of cash on some after market shafts, and a locker, and some beef U joints, and some knuckles, but in the end it's still just a 1/2 ton axle. High pinion or low pinion. 28 or 31 spline. It's still a half ton axle. Just like the 3.0 is always going to be a small torqueless POS that's not worth the money to rebuild let alone build.
The Ranger has been put on hold for a little while. The fund have been aimed towards picking up a full size to DD/tow with. (I don't give a shit about gas mileage)
I drove a 78 F250 4x2 w/ a 400m today. Needed some work. Title issues seem to be a, well, issue. Needed some bondo and sectioning and a carb tune up, a door, a grill, new leaf packs, a bed side pulled out, some trim, and paint. Oh, and a brake perportioning valve, and new valve cover gaskets. And a window. And a tail gate.
I inspected a 72 F250 4x2 w/ a 390. Previous bondo work wasn't the best, 2 year old paint job started flaking in areas, but over all looked good. Lots of work done to it, but still pretty nice for being a 38 year old truck. Guys asking 1200, I'm gonna have a grand in cash in hand when I test drive it.
Plannin on a cam, carb, intake manifold, headers, some exhaust work, air bags, and a goose neck hitch. Maybe a 14 bolt rear.
Playin with a computer dyno I'm lookin at around 425 ft/lbs and about 375 horsies. Much more then the 460s of that gen put out.