In your photos, I think I saw some residue of 'chartreuse' paint... in early '57 chevrolet painted the 265 ci engines CHARTREUSE to distinguish them from the 283 engines (which were used wtih Automatics and with powerpack engines).. There are possibly some people interested in the block and trans for that reason. Most of the added on parts (heads, intake etc) did not come with that engine in your car.