Hi Paul, you can get them from...
Finishline in Pembroke Pines / Florida.
Cobra Restorers in Kennesaw / Georgia.
Tony Branda in Altoona / Pennsylvania.
Good luck. I envy the guys buying overseas at the moment. When I bought most of my stuff 5-6 years ago the rate was always hovering around the 56-58 cents and the best rate I ever got was 61 cents.
Enjoy.
Regards.