Can I use the tramp from a H-16 on a H-14?
No. The 14 is 6" narrower than the 16, and the 14's tramp is shorter lengthwise. The pieces of a 16's tramp on a 14 would overlap each other; a 14's on a 16 would leave huge gaps.
What parts can transfer over from a H-14 - H-16?
Rudders, rudder castings, gudgeons, drain plugs & housings, tiller connectors, corner castings (I think), mast step, boom end fittings, traveller car, bow tangs (newer 14s only), misc. rigging fittings (but not any wires).
It's mostly the aluminum castings and misc. fittings, but not any of the extrusions (different lengths even though they may be the same section) or wires.