Once the shear screws are out, the ignition switch can be removed. Inside there is a weak spring thats supposed to pop the tumber holder outward after pressure on the column lock is released. Often, this spring is broken. Some good lubriplate or equivalent on the 30-year old column lock will help. Virtually all Panteras I've driven do this; neutralizing the steering wheel so there is zero pressue on the locking device, followed by slight sideways pressure on the key will allow the tumbler part to pop out and the key will turn. Mine was like this whe I got it in 1980. I really should get in there and fix it sometime....
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.