decal help on hh-53

it is goin to be 1/72 scale that is the only scale i can find of it and ty for the info.

You can also check for generic letter/number dry transfer sets in local hobby/craft stores.
You can do a search for custom decals or custom water slide decals and also try:
http://www.aeromaster.com/
http://www.lindenhillimports.com/products.htm
http://www.jbot.ca/en/index.shtml
http://www.hyperscale.com/

I would wait until I saw the photos of the HH53 to worry too much about the decals, most will be generic: Stars and bars, Danger Keep Away and that sort of thing. What scale is it going to be? Superscale International has tons of these Generic decal sets available, check the local hobby shop, or go online.
Good Luck!

Don