This H5006 bulb is the closest Halogen Reproduction of the original FoMoCo headlights that we carry. This bulb has the number 2 at twelve o'clock (to indicate its position in your grille) just like the original, and the FoMoCo logo is actually formed into the glass rather that being etched onto it, as is on some other repros. This high / lo beam is definitely going to be brighter than your original dim bulbs.
Also note: Other than Cougars, only the 1969 Mustang used these bulbs.
Don't forget that you need to install a headlight relay kit when you install Halogen bulbs! Get em here:
67-68 Full Relay Kit
69-73 Full Relay Kit