hi i had a mk 4 mfi the only way u can put a induction on is if you can get a a old volvo 2later the fuel metering is similar to an escort mfi. the case of the volvo metering unit under neath has a pipe outlet and it bolts straight on where the escort mfi one goes and its sounds really nice.4 branch manfold can out let more power but i think its better and cheaper just to put a 18 zetec in...hope that helps