I know the car is standard as it was my nans car from brand new and now ive bought it. Its an early s2 so maybe got a s1 manifold on it.On the inlet manifold on the rhs is the connection to the brake servo (?) and normally below that is where the green plug plugs into(?) BUT on my manifold under the brake servo connection there is nothing. Its cast that way. Id take a pic if i had the car here.