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