[DeTomaso] Techno question: Flywheel balance

[cengles at cox.net]

Dear Forum, 

I just bought a Fidanza aluminum flywheel. It comes with two different balance doots to attach to the lovely lightweight aluminum flywheel. 

Is it correct that the 351C flywheel uses a 28 ounce external balance? ....and that would compliment the normal 28 ounce externally balanced harmonic balancer?? 

Just want to make sure.

Warmest regards, Chuck Engles