You can still go with the year of the block. You and me brother, we will do this together! Well, I mean, you'll go first but I will be right behind you! (I hope)! From what I hear there was not much smog equipment in 66', so it might not be so bad.
You can always get in line next Jan for an sb100 #!
jdog
P.S. Check out the pictures of my 66' 427fe side oiler in my photo gallery. 600/600! Obscene torque curve!
