where to begin?

My hope is to have it on the road first. it already has nice upgrades to it, but has been sitting for years (15 plus) and i can see that the windshield has been leaking on the drivers side for some time. I have upgraded to the 273, replaced the transmission with one out of a 70 duster 904 trans. and replaced the rear end with an 8 3/4 hog head with posi 323 gears. and again that was 20 years ago. my finished dream would be something i could drive about and at the drag strip, semi serious. I will post some pictures of the old dart as soon as i get the camera up and running too....lol