You didn't mention what size engine you have but, if you follow the positive battery cable from the battery it will lead you to the starter relay, then to the starter.
Ir is rare for sure. How rare is hard to say, but this is not your common 1976 Ford F100.
should be right around the carb
Check nada for price
10w30 is a good viscosity for your truck.
Ford's fusible links are usually connected to the battery side of the starter solenoid.
Bad solenoid
yes
yes just have 302 motor mounts installed and proper drive shaft!
yes they both have ford 5.4.5
If it has a carb. on the inlet fuel line to carb.
On the starter.
the starter is located on the right side of the engine.