Believe they're different. At least the socket is.
I can't believe this but Amazon prime said Sunday delivery and the USPS just brought my set of Moog K704 BJs here at 7:15 AM Sunday AM. Take that Useless Parcel service. Looks like I'll be painting UCAs today.
Darn things feel awful tight compared to the old ones. I wonder how much sticktion new ones will have compared to the old ones. Maybe I'll just use the new boot for now.