I picked up Pepe from the mechanic on Thursday. While I haven't driven it too much, its obvious there is more zip to Pepe now than before. It also seems like the engine doesn't have to work nearly as hard as before and it runs smoother. That being said, I don't think this Eagle will ever be a race car without a complete overhaul of the engine and drivetrain. I probably can do some tweaking to eke out a little more HP (different plugs? timing advance? Gronk's cold air intake?) but I'm happy with the results of the head transplant.
Body man said he'd be ready for the touch ups needed on Pepe in a couple weeks!
Here are some pictures of the completed head swap!