hello,
you could prolly use a hobie16 manual which may be online. the g16 mast is the same section, but the jibs are rigged differently. the g jib has a zipper and attaches to the font beam at the clew. the forestay of the g does not attach to the bow beam, there is a bridle similar to the h16.
so, you should have the 2 shrouds with their adjusters, a forestay, and 2 bridle wires holding up the mast. the shrouds would be longer than the distance from the tang to the base of the mast, and the forestay shorter than the shrouds. the 2 bridle wires are around 4' each.
once you confirm that the lengths of your wires are correct, you should call a place like Murray's Marine and have them make you a new set of wires as a safety precaution.
you should have a main halyard and a jib halyard, a jib sheet and a mainsheet with all the blocks as well. the rigging of the jib halyard may be like a TheMightyHobie18, but it won't furl because of it's attachment to the bow beam.
check the rudder system. 2 rudder assemblies, a crossbar and a tiller extension are needed.
also there shoud be 1 or 2 sets of trap wires. these are made of the more flexable wire, have handels, are thinner and shorter than the shrouds. they attach to the mast tang with the shrods and forestay.
happy sailing