[3macs1]

Hi Jim:
Yes the clocking would be a different story. I will ask my friend who is into these Pontiacs if he can assist with a 61. I just knew he had a 64/65 for sale.If you have your original on your 68 it is rare for sure especially if the car is a 4spd. Our two 68 427 auto's have original air cleaners but not the stick.It is a hens teeth air cleaner to find as you know but I guess if one does the numbers roughly just over 5000 big chevs with 427 4spd. Take out the 560 or so l-72, then how many were tossed in the first year since they are a big ugly thing.I have not seen a original 4spd one for sale in over 5 years.Take care Joe