JDM HONDA REPLACEMENT ENGINE FOR DUMMIES

Can n e one particular tell me what type of obtain in hp i really should b getting? Also so i'v looked at acquiring a mugen air filter an box to but there v expensive, dose n e a person no if its value obtaining one an what achieve I might get from it. Thanx AshtonThe Honda B16 engine has cemented itself within the JDM aftermarket scene as Just abo