If you're in the UK, why not try Racebits? They sell kits specifically for the Duratec V6. It comes with a MAF adapter with the IAT port. My concerns is the filter supplied looks pretty basic, and it looks like you could get a bit of heatsoak due to the location of the filter. I ordered one for my ST24 and it cost me peanuts really compared to a K&N kit which would take about 8 weeks to arrive here and cost 5 times as much. I'll be replacing the filter with either a Green Filter filter or a Simota filter, and probably make it slightly longer so its closer to the air feed duct.