Joe,
would you happen to know if the Part number changed along with the shifters? If so do you have the part numbers?
Thank you,
VT
Yes the original 67-68 Camaro aftermarket Hurst shifter would be a different number as it used the old Hurst number system before they went to the 391-xxxx number used today. I have one and have some research on them including original assembly instructions.
It also used a different number chrome stick.
The 2nd design used an early 4106 stick with larger Hurst letters but looks same as the modern 4106 stick with small letters