When I first got my 98 SS I changed the exhaust and since then it has made all kinds of noises under the car. My brother says it's my exhaust. I have also replaced a transmission mount but it's making that same noise again like it's the transmission mount. I've been driving it around like this for some time waiting for my brother to work on it. Now the transmission is leaking. Any ideas on what it could be and what to do about the exhaust?

 

my exhaust was hitting on my x brace!