Minor update. I swapped the tires from the Schwalbe Kojaks to a set of Vee Crown Gem 2.25" and plenty of clearance. Also installed some Deer Head canti's but I have not adjusted yet due to not having the correct fork, still waiting for the threaded one to get here. I still have no clue what year this might be, no serial number can be found. Does anyone know what era Land Shark used those rear dropouts with the screws I have a pic of?