I recently picked up a "350" to rebuild and am not sure what it really is. Numbers on the rt side pad ar V1229MA which says its a 302,327 or a 350. Partial Vin stamp is 18L323985. Can anyone tell me what block this is? Date code on rear of block is L267 which I assume is a 70 model. This block has what looks like two very large plugs behind the timing cover with large square drive holes. Could just be casting but seems to line up with the lifter journals.