Actually... no, i didn't. I'm going with all stainless. I just polished the hotpipe tonight, as well as the intake pipe, and i'm thinking i'm going to order a 45° stainless mandrel bend for the cold side. I have a mild steel 45, and one stainless 45 already. I mocked up a coldside setup this evening, so i know my layout.
I "could" have used the piping that came with it, but i didnt want to. It even fit ok, really. I'm just being SUPER picky, and dont want aluminum pipe because it oxidizes and starts looking cloudy, whereas stainless doesn't do this as badly. Stainless can be polished and stay that way better, as well. Another HUGE reason i didn't use the piping that came with the FMIC, is that i didnt want ANY silicone "bends". The only couplers i'll be using are either straight, or high quality hump hoses.
I'm going to replace the intake and hotpipe pics this coming weekend with the polished, finished product.