Though for my application, with the club/ historic rego scheme (Victoria), I was under the impression that an engineer is no longer required as the car is inspected by the club signatory.
On the plus side (for the engineer) there is always the ability to get full rego, and insurance....
Feel free to share your experiences!
I think you will find most clubs will want a RWC or an engineers report for any modified car they offer plates for . The club will be held liable and could loose it's ability to offer club plates if found not following the rules . A car still needs to be road worthy and legal to be driven in Victoria and club plates do not exempt you from that .