Regardless, getting a spoon engine won't give you much of a power increase. I thought I saw somewhere that the Spoon B18C5 engines put out about 215 hp. Spoon does not make super high powered cars to race. Spoons racing focus is on making a small increase in power, huge decrease in weight, brake upgrades, suspension upgrades, fuel efficiency, and reliability. Spoon gets their bodies from Honda just after the primer is put on, which is before any insulation and sound deadening (body in white) The Spoon Fit ran a 3 hour endurance race and needed no replacement parts, and they finished before several teams using NXS Type S.
If you want power then there is no point in getting a Spoon engine because they don't have much more hp than stock Honda engines do.