Yes, I have the automatic floor shifter. I am not sure if it fits a '66, I think I depends on the transmission. The '67 had L1 and L2 positions. I think the '66 only has L1. You will also need the boot and metal surround for the boot if you don't already have those items. I sold mine already. Let bee know if you are still interested and I will post some photos and come up with a price.
Sorry Stacey, I deleted my post. I didn't realize you still had a shifter for sale in this thread. I was under the assumption yours was gone already.