I'm not sure what version of the '68 you had down under, but the new Revell '68 is the European model. The American '68 Beetle had different bumpers, tail lights, headlights and some other parts. All of these are available on the new Revell '70 Cabriolet, including a vented engine lid. Here's a photo of the '68 with the Cabriolet engine lid on it .. perfect fit. I have both so did a quick tape up and crappy photo. but you can see the perfect fit (including hinges) and the vent pattern.