Thanks, I didn't want to go posting a thread without getting opinions of people who have had or have seen a similar problem, I wanted to make sure it was, what it was. I didnt think to check youtube for other videos on rodknock because I wasnt aware there was any, but I will sure use it in the future.
As for the exhaust leak, it has a after market exhaust system and the previous owner didn't put any gaskets in, and I haven't had a chance to jack the car up enough to get to it yet.
Thank you all for your help and ideas!