LOL, someone awoke the dead. So, can anyone post a picture of a correct 66-67 pulley with some spec's to go with it?
No problem with the 68-69 info as I have a 68 Hemi Bee I am going to need to track down the correct pulleys for as well.

Thanks Guys!!
Dan.

At a car show a few years back a survivor 68 Hemi R/T showed up and that had the 69 and later pullies. It was a late build car...I don't recall the SPD. It was enough of a revelation that the newer pullies were phased in sometime in mid 68. Likely because Chry. was thinking they could remedy any overheating problems and mitigate so many hemis getting replaced under warranty.