If bonnet and wing clearance issues are a problem, it might be worth seeing if you can get a custom manifold made. If the one you have linked to is anything to go by then one could be fabricated with little bother.
My MoT tester has just gone to bike carbs on his Mk2 Escort, its absolutely transformed the car, plenty of power just where he wants it. Fuel economy is much improved too.
Arwyn
