Ok I've dealt with this long enough. On my lunch break I finally got around to fixing the exhaust leak were a band clamp connects the passenger side header to the y-pipe. I used that aluminum tape, which I had sitting around then drove back to work. The ticking exhaust leak seems to have gone away, but now it is more apparent that the ypipe is rattling. I thought the rattle was related to the band clamp, but a closer listen says no. What should I try out to find AND stop the rattles? Thanks!

 

The rattle might be the sleeve rings on the O2 sensors vibrating. I taped those rings up on mine using that same aluminum tape and it cut the noise down by 50% or so. Hope that helps.