In my experience, there's only one version of the small Chevy block that was cast without provision for an oil filter, a 1955 265 cubic incher. Such a block could have been delivered in a Corvette but it could just as easily have been in a '55 Nomad or a pickup. It's a little surprising for it to have been built into a Junior Stocker because, by the time Junior Stock came along, racers were aware of the differences between a '55 block and it's successor, the '56 that DID have provision for a canister fllter. In my 45 years of connection with NHRA Stock Eliminator, I don't remember a time when tech would have insisted on the use of a '55 block in a '55 car. I know that, by the mid-to-late 1960s when Junior Stock was in it's heyday, everyone I knew that ran a '55 had a '56 passenger car or '57 truck block.
Further, it would not be likely to have had those head castings as a Junior Stocker because that number (whatever they may be) are not on the approved list of castings for use on a 265 even today. The NHRA accepted head castings for that application in either 1955, 1956, or 1957 would have been 3703523, 3767460, 3795896, or 3884520. Farmer Dismuke would have rejected those heads summarily. Still, it's a neat piece and a real conversation piece.
