Right off hand, I'd say that raising the engine an inch wouldn't be too hard. If it were me (and it's not), I'd have a decent machinist make some spacers and simply bolt them betwee the mounts and block. If memory serves me, the bolts on a small block motor mount are vertical, therefore the spacer thickness would dictate the amount of engine lift. Another way would be to swap in some '65 style mounts, which had a angled piece that the mount bolted to and that whole mess bolted with a vertical bolt to the frame rail. That, too would simply need a spacer to raise the engine. My car's pretty low, and the trans pan and exhaust scrape way before the engine oil pan, so I can't imagine how low your car must be.