Hello from BluePrint Engines!

The website is correct, as noted below.
Harmonic Balancer: 360 EXTERNALLY BALANCED '93-'97, 7.25" Diameter
Flexplate/Flywheel: Pre-Magnum, Weighed 360

Thanks, to me that is just an odd balance, but if it works.

Hey a shout out, I have two friends that bought your complete 408 motors around 3-4 years ago, they have beat them hard, and they are still running with no issues.