are you tryna make it a dirtbike w long travel and a 19 front wheel? 90s kx80.
tryna keep stock magnum mags w drums on a set of fancy forks? find shorter drum ones - early or pre-80's small dirtbikes.
stockish ride height - KX65 are cool but I dont see many. small XR can work but drum.
magnum forks are pretty awesome tho... I assume you're going for disk.
crf50 (and clone) stuff is everywhere, 12mm axles and though they're made for tiny wheels, they have enough travel to fit a 17 easily.