Thank you for the help. After reading the replies here I decided to use clay bar and wax, no polish. I am afraid the polish could be making thr paint dull. I called a local body shop and asked about polishing enamel paint, that guy said to be careful with the polish as the modern polish products are designed for clearcoat that is a lot tougher than the soft enamel. The clay bar cleans but does not scratch. Does this make sense ? Do you agree with this approach ?
Yes, that approach will work. I don't agree that polishing enamel will make it dull. I've polished lots of old Vettes with original paint. I use a very light cut polish and finishing pad with a Porter-Cable 7424 polisher on speed 6.
You do have to be very careful. Old single stage enamel is not like Base/Clear. It's fragile and it tends to oxidize quickly. If you cut too much, you're through to the primer... then you're screwed.
Wax will make it "shinier", but not as shiney as polish followed by wax.
Claybar will make the paint surface "slick". It removes imbedded contaminants in the paint. It will not make the paint shine, but won't scratch it either.
Here are some pointers on claybar:
... Break the bar into 3 or 4 pieces.
... if you drop one, throw it away!
... use lots of lubricant
... Rub the bar across the paint until it doesn't "drag".