EEC tank vs non EEC/ 71 Dart

thanks, lots to read about. finding the drawing of the systems helps understand the starting point/idea of the original system. Was looking at a 68 dart gts fuel vent at a show recently. My car does not have the charcoal canister on it. Could just be missing. November 71 build. Got car from local guy who claimed to have owned it as second owner since the early 1980's. Paper work, history seemed legit. He wanted to do a 340/360 cloner. Bucket seats, floor shift. Some good, some bad with his work. Been sitting since 91 or 92 after he removed the 318/904 trans. Gave me a well used 1976, 360 motor . The block barely passed sonic testing. Building on that. 408 stroker soon. 30 over,9.5:1. RHS 360 La x heads. comp 268/274 solid. 727 trans.