I have owned my pantera for 25 years. The ZF was rebuilt by Roy Butfoy in 1989. I have never heard it whine. Not sure told that there is gear whine in the ZF. If built correctly and serviced each year, it is a quite running device. Nonsense to whomever told you that.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.