GM HEI mopar dizzy hybrid

Years ago MISF ("My Infamous Scout Friend") bought a "DynaMod" supposed hi-po HEI module. Their claim was no loss in dwell angle and his 400 Pontiac was falling over starting at about 4k rpm. We tested that against a known to be GM OEM HEI module. Both had 45° dwell at idle. The GM module lost dwell angle, was down to about 30° at 4500 rpm (as high as we were willing to freewheel either engine). The DynaMod still had 45° dwell at 4500 rpm.

No idea if this is still true. That was about 20 years ago now. I feel old.......