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As a guide (+ 15-20 BHP = Ј75 - Ј100), air filter; (+ 30-50 BHP = Ј400 - Ј600), air filter + Performance exhaust system + spark plugs; (+ 70-80 BHP = Ј700 - Ј800) add reprofiled camshafts to what's already been listed, remembering that there are 4 cams;
--- так вот , что такое J100 например

остальное я и так понял