Hello Jack,
Here's how I removed the steering wheel from my '67 GT350.
!. Protect the wood rim with cloth/rags.
2. Get a brass drift and a mallet/heavy hammer
3. Sit in seat, prop your knees/thighs against bottom of steering wheel.
4. Leave retaining nut ON !!!!!
5. Hit center of steering shaft with drift and hammer.
6. One or two good hits and it should pop off.
Good Luck. Doug