It is the joy of modifying as grant and a few others have said. Due to the massive variation in parts for starlets I can understand why no direct instructions were supplied. As for hardware (vac pipes etc) there are plenty of company's around the uk that will be happy to help find the correct thread size and pitch of the fittings. To be honest if some one was developing an inlet, there are a lot of things that need to be taken into consideration. Fitment for one thing. The ancillaries (throttle cable, icv, coolant hose etc) probably wasn't fitted to the test engine while under development. I do agree that modifying is a hard thing to get your head around sometimes. Challenges pop up all the time. But isn't this why we have the forum? Ask a question and get an answer? Just glad it's now fitted and hope you get your vac leak sorted out RBZ.