ek9 ek4 engine… but how…

search for my buddies ek9 or ek4 engine… his ej is already as good as fertish and no need to replace the heart… we want to make a type R out of it… also have an offer of an ep3 engine only the wall exceeds our knowledge… an ek9 or ek4 would suffice, moreover it is type-appropriate… brakes and so is no problem only the motor and electronics is the difficult… especially what price can be estimated without being pulled over the table. thank you in advance