Sorry Mark just trying to get the right one. Look at the two examples (look close at the bottom of the antenna) . This is the wrong base
http://www.ebay.com/itm/NOS-69-70-Ch...a1&vxp=mtr
This is the right type of base //www.ebay.com/itm/1969-74-Camaro-GM-Manuel-antenna-mast-3943653-NIP-Rare-Find-/160959549416?pt=LH_DefaultDomain_0&hash=item25 79efcfe8
Let me know witch one it is.
Thanks Dennis