I don't know if this was a 302 only issue so it could apply to the 350 as well. I am trying to figure out if vacuum line from the distributor which had a metal line and metal clip that bolts to the intake, was used throughout the year, or if there was a mid year change to all rubber from distributor to carb. I would appreciate if guys that have the original metal lines and the clip could respond with build dates, or motor dates. I also would appreciate if any guys with original motors with an all rubber line, and no clip on the intake could post the build date of their cars. I don't have a good picture of this, other than what John Z did rerouting his. So if you have a original picture please post it.
thank you for the help.