Brown is back together

The replacement flex plate arrived and I was able to put everything back together and reinstall the engine. The only problem was that one of the engine mounts wouldn't go on but I got there in the end and Brown is now up and running again. The main problem I have is that the exhaust is knocking on the rear crossmember. I suspect that the engine mounts need replacing. I've also noticed that the engine seems to vibrate quite a bit. I wonder if a good tune-up is needed. I'd like to fit electronic ignition which should help but the cost is a bit prohibitive now that I'm back out of work.