duck457,
The Standard Ignition coil number is #UC15. If you have a Carquest in your neighborhood, they can cross that number to a Carquest equivalent which sells for $16.00.
If you opt for a coil with the internal resistor, you can get rid of the externally mounted ceramic resistor, which can be problematic. On the downside, the rig will not get the benefit of a little hotter spark when starting (cranking). If you are lax in the tune-up department, this could make a difference.
As joker pointed out, you already have a coil...it might be easier to just stick a new ballast resistor on the truck and call it good. It is nice to know that there are options though!
Stuart