"you cannot have electronic fuel injection or turbos in vintage engines in vintage bodies"
That pertains to running in the Vintage classes.
" For reasons of historical authenticity, vintage engine modificationas and equipment used shal be restricted to older technology levels, so far as practical. Accordingly, in classes XO, XF, XXF, XXO, V4 AND V4F USING VINTAGE BODIES"
So then it should read:
" For reasons of historical authenticity, vintage engine modificationas and equipment used shal be restricted to older technology levels, so far as practical. Accordingly, in classes XO, XF, XXF, XXO, V4 AND V4F USING VINTAGE BODIES
IN VINTAGE BODY CLASSES " ?