in deep! need help! !

1973 duster. Gutted the doors and lost 52 pounds each! I made some frames out of a sign material that has a very thin aluminum on both sides of a 1 / 8 inch plastic to epoxy my plexiglass windows too ,but now how do I hold them in there? The sign material makes the curvature but I'm not sure how to bolt them in and make sure it's dragstrip leagel??? I took everything out! Please help! View attachment 20140903_194147.jpg

View attachment 20140904_184342.jpgI would like to be able to go full up and full down without a crank arm just up for drag and down for street.