I am a neanderthal compared to what you have achieved so far, therefore if I can cut in a donor panel to my door striker panel you can do the same with the hinge side!
Must admit that the great and the good from this very board provided me with the encouragement, you can see my efforts here.
http://67-72chevytrucks.com/vboard/s...=658621&page=6
Good luck, looking forward to seeing you throwing sparks and sticking bits together with the sparkly stick.
P.