I want to get this straight or get set straight...

If I were to take two hi-pinion front-ends (dana 60 or AAm 9.25 for example), turn one of them around for the rear driver and then flip it, would the rotations be correct to run them? I am envisioning a HP front and a LP rear, both offset to the same side.

Is there a dramatic disadvantage to running the rear ring and pinion in the opposite direction as intended. Or could a person feasibly change the gear set in the rear-end to a standard rotation assembly once flipped?

Thanks for the clarification.

Both driveshafts in a normal 4x4 rotate the same direction.
Axles flipped upside down rotate the wrong way.
You can't swap low pinion gears into a high pinion housing, or vice versa.
Gears are noticeably weaker on the coast side (nobody really talks numbers, but yeah, it's significant).
If you want four wheel steering with both diffs offset the same direction, and all the gears running on the drive side, just get a Ford 60 and a Chevy 60, put the Chevy 60 in back, and run it. Don't flip stuff upside down, it won't work unless your driveshafts spin the wrong way.

Thank you very much. That is exactly what I needed to know.

One more question... What are the limits on u-joint / CV joint if I were to run an offset rear axle with a center out-put transfer case. I guess I am looking for realistic angle limits or driveshaft length guidelines.

Thanks.

One more question... What are the limits on u-joint / CV joint if I were to run an offset rear axle with a center out-put transfer case. I guess I am looking for realistic angle limits or driveshaft length guidelines.

There aren't really any generic guidelines, but rather lifespan suggestions and mechanical limits.

Most single-joint yokes are limited to somewhere between 20 and 45 degrees, by joint bind. Obviously, bind = break, so don't go past bind. But there's not a hard and fast rule--I've run a driveshaft that would accomodate 45 on one end, and only 25 on the other, using the same joints--the weld yoke allowed more angle than the slip yoke.

Lifespan suggestions are usually that you not exceed about ten degrees for operation at speed, and the more angle you have, the faster your joints will wear. Some sources suggest five degrees, others, fifteen, but it depends on who you ask, and how long "reasonable lifespan" is to you.

Highdollar CV's are available to run as much as 80 degrees, but some of those get into the old saying of "just because you can, doesn't mean you should". I think the highest angle CV that's considered "roadworthy" is usually regarded as the 42 degree "1 ton" unit.