Which AAM to swap for D70

[lco]

Swapping out my d70 before I have issues with it. I would Swap a d80 in but living in California they are really hard to find. I found an 11.5" gm rearend with bad spider gears for 250 and dodge 11.5" rearend for 700 in good condition. Which on should I go with? What's all involved with swapping one of these rears into a 2nd gen dodge? Thanks

 

[Howling]

Dodge has 4" axle tubes GM has 3.5".If your not going to weld up the spiders or spool it the Dodge has a better posi

 

[DEZLFREK]

i have one d80 with posi and 3;54 gears for sale cheap.. pm me