4100 Help

Newbie here so bear with me.

I just bought a 4100 1.08 C6FZ-B carb for my Mustang.

It had somewhat recently been rebuilt by Pony Carbs and, according to the Pony Carb invoice, "calibrated" to a Comp cam duration at .050 Int 218 Ex 224

Where can I find info about what might have been changed in this calibration? If I had the stock specs for the carb I would have a starting point so where can I find those specs.

Any help would been appreciated.


Thanks,
Tad