Hi all '86 Fith avenue RWD 5.2l 318 v8, 111000 orig miles noise question

86 318 sedan. I've owned it since '99. For about two years I have had ready to use in my garage and double roller timing chain, and a new water pump, but I haven't found a mechanic that wants to work on the swap. Now, I hear some faint metallicrumbling/clanging under the hood and thought it might be the timing chain. So far performance is not affected, but I am definitely driving the car gingerly. Thought it was suspension/or breaks, but Pep Boys just sold and installed a new set of shocks and sent me on my way. Breaks aren't acting weird or anything, but sometimes the sound is located / sounds like on bottom end area, which made me think suspension/breaks. I really don't want to wait and mess up the car worse. Any comments appreciated?

Steve