Hi, first off i know very little about getting a car registered, i am just wondering if i change out a blown engine with another engine same model that is done by a unqualified mechanic (car is not registered atm), how do i go about it when getting my car registered as it will not show up with same engine number? the question i have about a manual conversion is if i convert my auto to manual, should i notify vicroads etc and how do i get it all down on their system legally so i'm not driving and always watching out for police? again i have little knowledge , thanks.