Have you checked your main fuse yet? Pull every fuse in the panels both below the knee bolster and under the hood, you may have quite a few blown, especially under the hood. I am not sure if they use fusible links anymore, but that is what they used years ago to prevent damage like this. If so they will need replaced,and are normally in the power wires at the starter, maybe explaining the starter trouble. Starters are pretty tough, should be fine unless you left it hooked up for a while backwards.
Susquehanna Valley GTOs