I wasnt sure if the Hockly cars were cat2 modified rather than cat1 due to this. I know of a rwd car recently done with bulkhead mods (to move engine back in the bay) that forced it to be cat 2 passported rather than cat1. I guess asking MSA technical would be the best most foolproof way to go at this stage as a written answer from them will be hard to refute when the passporting process is done. Wouldnt have wanted you to finish the whole process then the MSA refuse to issue a passport!
Paul..