Depends what you want?
You can do a 60 semi float or 60 full float
60 full float :
is mostly what is talked about above, 6 lug hubs,
30 spline shafts stock
35 spline 1.5 shaft (optional) with spindle boring on NONE 60hd rears, and
> stock d70 35 spline shafts will fit if matched length.
PROBLEM shortest stock dana 60 rear is 65" WMS
I assume since you did not mention what front axle you are using but asked to stay with the 6 lug you are keeping stock front axle? so the 55" front and 65" rear would look interesting to say the least.
OR
Semi float :
Centered crusier housing
You can go wagoneer shafts in a 60 housing, OR IMO a toyota mini axles in the 60 housing would be a MUCH better axle and with the availablity of stronger aftermarket shafts, toyota parts, disc brake parts,etc.... makes it easier.