The site says: For the 1968 model year, the chromed hood trim for SS396 changed from the simulated finned cooler to a set of simulated carburetor velocity stacks. The early 1968 model year SS350 continued to receive the 1967-style finned hood trim, but the SS350 trim transitioned to the velocity stack trim as the year progressed.
I'd like to have some data to document when the SS hood changed from the finned ornaments to the velocity stacks.
So, looking for data from original 1968 SS cars:
Build date, SS350 or SS396, finned or stacks