Ok, now we are getting somewhere, and i feel i am getting alot of good opinions here.
I know I will have to cut down whatever i decide on.
So far we have these opinions-
1. A 14 Bolt
(Might be a bit Overkill, Dont you think?)
2. A Ford 9"
3. A Dana 60
4. keep the front dana 30
(Although I would like to upgrade this to a 44 for any offroad use i decide on in the future without regretting not upgrading).
Remember I would like to covert whatever to a 5x5.5 bolt pattern.
And it needs to have rear disk brakes.
IMO your best option for your plan is a ford 9 inch, trucks and bronco's had the 5x5.5" pattern already. More than strong enough, I have a moser 9 inch in my Gale banks TT sbc '85 Monte Carlo SS, 350 blower pistons, carillo rods, eagle crank, afr 227 competition heads, custom solid roller .630 lift, 228 duration at .050, msd, C&S aerosol billet blow through 850 carb, art carr 4000 stall, trans brake, pg. It's putting down over 1000rwhp at 16psi boost with 13" slicks. Also my boy has a datsun 260z 406 alky injected, runs 8's with big big wheel stands, it runs a 9 inch ford and has since 2002 with no issues ever!!!
That said my jeep cj7 has a 9 inch ford out of a '67 bronco, looks good, easy to install and easily handles hp, and is only a couple of inches wider than the wide track. I changed engine choices and went 406 sbc, 9:1, ported aluminum aftermarket 210cc heads with 2.055/1.6 valves, victor jr, 750dp carb, lunati .507/.525 lift cam, 3500 stall, built th350 and 205 case, 33x12.50x15's with a 6 inch lift. Pretty quick jeep for the street and 4 wheels great.
If your going to rock crawl or serious off road then that is a whole different story.