Thanks for the reply. I was worried about a turbo which is why I looked at a supercharger.

Moving to a duratec would mean manifold and exhaust move sides since the zetec exists on the passenger, anything else would move to the driver's side

I was looking at a Honda k20 engine. Same issues but standard, they hit 240bhp


My spec is

• Head ported and polished by CNC heads and matched with their specification cam. Following this link ( http://www.cncheads.co.uk/?p=755 ) takes you to the website the tuner provides on this head and cam combination for more info, extrapolating the power claims CNC make ( 215bhp @ 6400rpm and 247 bhp @ 8200rpm) to the 7500rpm limit on this car fairly accurately supports the claimed power output on this engine.
• Arrow engineering buckets
• ARP rod bolts
• Balanced and polished crank
• Standard Zetec flywheel machined and lightened by CNC Heads
• Raceline sump
• Omex 600 ECU
• Jenvey throttle bodies
• Bosch green injectors
• Simpson Race Exhausts aluminium manifold 4 into 2 into 1