You're biggest problem is likely to be getting a cradle to mount the charger on, as opposed to the charger itself or the associated pipework. You either need to get an original item made for the job, or find someone with a charged engine, and borrow the cradle to get a copy made up. Just guessing at it with a tape measure and a protractor isn't going to work - that charger needs to be lined up spot on for the belts and pulleys to work properly and true.