Hi all. I picked up what I believe to be a 79 XL500 that has been beaten practically to death. The motor runs good, has good compression, starts and drives good through all the gears. But everything else is rough. I fondly, and incorrectly thought I was going to buy this old girl and restore it. It appears I was very wrong. There are apparently no parts available. So what do you guys do? For instance - the muffler is rusty and has some holes in the header pipe. I could spend time and money patching it up and it will be just that - a patched up turd. But I can't find a muffler. Not new. What to do?! Ugh!!!