Cheers Turbo zetec I'm the guy that bought your modified inlet manifold. My plan is to use a mazda rx8 5 speed box and adaptor plate to a st170 bottom end and a blacktop head and a td04 turbo using fiesta rs turbo ofab management (only because i have it already in the garage) but if it is too much of a pain in the arse to set up in may opt for megasquirt set up. Turbo zetec did you have clearance issues using that manifold? and what water rail did you end up using or was it one you fabricated yourself?