Moving forward on a 68 Mustang the long rear fuel line meets the forward solid fuel line from the front driver side wheel well.
In this survey of my picture it appears that I found a period of production where what appeared to be the typical style used in 68 production at San Jose changed for some reason and it apparently does not appear to be the results of someone placing a single box of clamps at the wrong station.
I have more examples but choose those that best represented the early and late VINs at the beginning and ends of the patterns. Unfortunately we don't have the real build dates for these cars and are left to compare VINs. Of course since cars were not built in sequential order we would expect some over lapping of those numbers at or near the end of all patterns. Each example is identified with a shortened VIN
Zinc screw tightening band clamps
Spring band clamps with squared off ears like we see above used for the fuel sender to solid line application
Zinc screw tightening band clamps
More to follow