What kind of axles are these?

[redrooster]

It is still considered to be centered.
Older Chevrolet, Jeep and Dodge trucks will have the passenger side drop.

 

[TP83]

Will all FF rear ends fit into a 5 without changing shifting the driveshaft to the left or right?

 

[redrooster]

They should. The u-joints are able to handle minimal offset.