68 Barracuda Fastback 340-s

Vin number will show it came with a 340. Only a Formula S (on the Plymouth side) came with a 340. You could not get a non-Formula S with a 340 in 68.

When we had the big thread about the washer welded to the K-frame on 340 cars, I don't think anyone with a 68 340 had the washer. I suspect that started mid 69ish or later.