As Storming said, send a photo to machinery decals he will sort it out with the sn number ime not sure that mark at restoration decals does metal backed but you could try him to. Good luck,
I would say it will be very hard to find one,I had one and if you put in a search on here ime shough you will find my posts when I did a full restoration on it, I only know of 2 in the uk, there are plenty of huffy surburbans in the uk though
He are some picts before resto and after