Check the listing for details. Super Cyclone GR Model Airplane Ignition Engine BARE LOWER ENGINE BLOCK HOUSINGS. Condition: Used. Listed at 34.99 USD. FREE Shipping Lower 48 States !! This is for a pair of used Super Cyclone Ignition Engine 60 GR Bare Lower Engine Blocks for a Model Airplane, Tether Car, or Tether Boat Engine with Ignition. The Block on the Right has 1) broken or damaged front mounting pad & no other problems or issues. This is an early Block & has Much Thicker Block Mounting Pads than the Block on the Left. The Block on the Left was highly modified to fit a tether car & only has 2) rear engine mount pads still intact. This Block would need a small hole to be filled with J-B Weld Epoxy in order for this to be possibly used again, however there is also a crack that runs the length from the hole to the threaded rear cover area & this may leak as well. I will include a rear GR cover, lower lip is slightly bent but this will install correctly & keep fluids from leaking no damaged threads. This would be an Excellent Choice for the Engine Rebuilder or Engine Hobbyist in need of spare parts !!