Where does it say that GTS? In NSW we have always needed an Engineer's Report for say a VN engine into a HQ. You have always been able to put an injected top end on a HT-HJ block and put into HT-HJ but never been able to do this for HX-WB. As far as I can tell this won't change. We will be able to fit bigger engines under the national rules, but we won't be able to fit 8" rims to HQ-WB anymore. The biggest allowable will be 7" (well 7" plus 15mm) without an Engineer's Report.
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