u/ligasd22

I got a 97 Chevy c1500 with a 5.7L it has a tick-ish sound that comes and goes. I also got a p0153 code that comes and goes with the sound. So I’ve done some research and I think it’s an exhaust leak how do I go about finding and fixing the leak? Also Please let me know if yall think it could be something else. (I’ll update once it’s fixed)

I’m trying to digitize myself but it doesn’t look good to me the other picture is from a digitizer on fiver but it wasn’t the correct measurements so I decided I’d try it myself. Any tips?