Well here's how far I've gotten.
Even thought the Mog portals, rebuilt and cut to 61" cost "only" 5790.- a set with disk brakes, they will not clear my oil pan without lift and they require new drive shafts. So exit Mogs

.
I allready have an Ranger O/D (1500.-) and the coresponding drive shaft (~500.-), So this leave me with
1. "basic" 303 + rebuild + resize + disk about 6000.-,ranger O/D 0.-, drive shafts 0.-, new portal gears $?
- I can always save some money by sticking to the original drum
2."Highway-frendlier" 303 + rebuild + resize + disk 6000.-, ranger O/D , new portal gears $? and rebuilt (no-core) NV4500 3300.- , new drive shafts 500.- (length!)
3. "basic" Portal-tek. My quote was for 9500.- (w. nothing extra and not 8500 ! - Russ, Scott?), lockers 1450.-, ranger o/d.
4. Stazwork - no answer yet but the web page has a starting price of 3680.- (for a stearable axle, I assume) + 3rd members $? + lockers 1450.-
5. (anybody ?)
There are probably deals out there I have not stumbled upon, so let me know, please.
Anyway, to resume, I can get it done for about 6k for basic 303s or spend almost twice that and there is always Orion or Atlas t/c to consider for even more flexibility.
hmm... Where to draw the line...