It depends on bolt pattern/ width/center bore and back spacing, you didn't say what the rims where off of.. Roadkillcustoms is the site I use for rim swapping, they lists all vehicles that have the same bolt pattern along with their other dimensions.
Mazda pickup rims will fit.
if the mustang wheels have 5 lug holes they will fit a ranger
As long as it's not a full sized ranger, yes.
My 1993 buick lesabre rims fit perfectly on my dad's 96 ford ranger, so I would have to say yes.
Can a extended cab 2000 ford ranger seats fit in a regular cab 1994 ranger
bolt pattern for a 1994 ford thunderbird
no different bolt pattern
yes
Try one on the Ranger and see.
yes
No, different bolt pattern.
A 5.0 liter engine will fit in a 1994 Ford Ranger with some modifications. The position of the transmission, motor mounts, and wiring will all need to be changed.