ive got an ebay catch can and its crap tbh, I don't think its caught a teaspoonful of oil since it has been fitted. I`m going to fill it with SS wire mesh, see if that helps and also isolate it from the TIP.
you`re going to need 19mm hose (oil resistant) a tee piece and maybe one or two more plugs ect., not sure on size.
most of us have very slightly different catch can setups but the pipework is mostly the same.
the best thing for you do is, buy your catch can of choice first. then work out what size reducers, tee`s, plugs and other fittings you are going to need.