Steve,
Let me give you a little advice from at least some of my own personal experience all learned the very hard way. This grill restoration hobby can be a lot of fun and very rewarding. It can also quickly turn into a big money drain (and marital discord, too!). The big lesson I am still trying to learn is to BE PATIENT! There are good deals out there; you just have to weed through and ignore others that may look good but aren't. And you have to be willing to wait. It is also true that you can buy virtually every part you need brand new. The only problem with that is by the time you are done you could have bought a perfectly restored grill for less (see some that our members have listed for sale at modest prices) or even be close to buying an all-new grill.
Now that you already have this decent looking Silver C, I am suggesting you don't over-react just because you got snookered on the prior owner's botched LP conversion. You can definitely get help here on this forum for parts, but it isn't like ordering on Amazon or Weber. You will have to give members a chance to respond. Trading and buying from members who truly want to see you succeed is going to be way cheaper. That isn't to say you shouldn't have your eyes open for "donor" grills if you plan to do more restores, but I would hate to see you dump more $ than is needed to get your Silver C working - and looking - the way you want.
I will see if I have anything in my inventory that might be of some help. It will take me a while!
Thanks a lot I really appreciate the advice. In reality I just hope to be up and running by 4th of July. Thanks again.