Engine Clicking Noise - Low RPM's

[Waffle99]

I've got an engine clicking noise at low rpm's and when I accelerate in higher gears at lower speeds I get a vacuum sounding noise. I am trying to get with Drapheus soon for a valve clearance check to see if that fixes the problem and getting a new valve cover gasket while I am at it. The vacuum noise might be an exhaust leak? Can someone post what our exhaust gaskets are supposed to look like because even though I ordered OEM, they might be the wrong kind.