I pulled the points distributor after I purchased my truck and immediately went to HEI. I do know it ran briefly, but I would replace the guts and just use the housing, if I was you. Distributor:
$35...
Now $25 +ride
I used this HEI cap for approximately 1500mi. It does show some carbon build up, but that is it.
NOTE: this is without a control module, though the coil does still work. It will run, if you add a control module. Cap & Rotor:
$30...
Now $20 +ride