Some pretty good suggestions, ^ looks mint micky. I'm still unsure, a huge core like the hdi / j performance ( same thing i think ) will obviously provide better cooling and lower intake temps, but might be overkill on a ct9 setup. It will sit nice behind the bumper i'm gonna get though. Toyo sports kits do look alright, nothing like their manifolds and decats. Only thing that puts me off though is that long ass network of pipe, but yeah could get a short hot pipe off dean. Blitz systems are quite far outta my prige range haha. Hadnt thought about a custom system, good shout.