u/DryLeg6291

I need help diagnosing this noise on my 1995 v6 4Runner. I bought this car back in December and haven’t really noticed the noise until a few months ago. It only comes up above 1000 rpm, but usually gets drowned out due to road noise. I’ve tried looking up a cause and found people saying it’s either the valves needing new shims or an exhaust gasket going bad. Just wanted to post here to confirm, and see if anyone knows exactly what’s wrong.