Does anyone know what engine came in this 1984 Jetta VIN #WVWCA0165EW100693? My info says it could have been a 1715cc Gas, 1718cc 90hp 4 Cylinder or 1970cc Gas. Which one and what is a 1718cc? The previous owner has made major modifications (16V, A2 dash, vented rotors, etc)

Also, from what I understand, the rules state I can't make a model. So putting in a 1.8L 8V to make it a GLi is not allowed? I'm just across the border in Canada, but want to make my car meet SCCA rules, because I will be running more in the US. Our sanctioning body here has a similiar class to IT, but allows update/backdate "provided the body shell is otherwise identical between original and updated model and that such update is complete."

Thanks,

Alex