Sting Comp 100%. Frame is identical to SX2000 but the first gen (Tange) forks for the Sting/SX had problems with the drops cracking, and basically when they rolled out the new forks they changed the name too. DR=April 1980 build on the frame, which is right at the transition. They sold both models side by side for a while as they ran through the leftover SX's. If I recall correctly the new fork rolled out in May '80. Geo is the same as Sting, the front triangle tubing is just slightly thicker less/high tech, the seat tube is not flared at the BB, and only the joints at the HT are smoothed. Fully hand-braised, full cromo frame.