Just tell Gaz you want to remove your pre-cleaner and use the YD25 snorkel with the extra air duct included. He knew exactly what i was after when i asked, as a few blokes have gone this way and used him.
I cant fault Garry's service, probably the best online service i've ever had.
YD25's were the next model after the Jap built ZD30's i believe. They came with duel batteries which is why the pre-cleaner was removed (i think).lol