Gears Vs Converter

OK, I have a 66 barracuda with a 75 360 basically stock except for a comp XE 262h cam, and a Wieand 8007 intake with a 670 street avenger carb. The transmission is a 904, I got from a local FABO Member.

I have a 3.91 gearset, as well as a 2200-2800 Boss Hog Converter. What are the Pro's / Cons of going either route for better off the line performance.