The aftercooler (intercoolers are used between the engines cylinders on a rotary engines on planes, hence the word intercoolers).
the after cooler is model specific to the model due to the lack of space, first is the engine radiator then comes the air con radiator and infront of all of them taking priority of the the air flow is the cooler for the turbo, this is basically just a small radiator that fills with pressured hot air from the turbo,this hot air is then cooled down and sent to the inlet box (superchargers use the engine or electric motor to do the same thing but without the hot air you find with exhaust drived turbo's), I cannot consider any second hand units as the fins have to be in A1 condition, I will then spray the whole unit in heat resistant matt black paint to help dissipate the heat in the cooler when in use.
glad you are getting the kit to finish the job completley.