cam gear cover should be enough, you really only need one off to look.
If it's PS fluid it's the pump, the reservoir hose, or the high pressure fitting/line into fitting.
if it's oil and it's up there, it's either the cam or crank seals (possibly cam vvti gear), or the valve cover gasket (though rare to leak there since it's fipg).
1. Black on Black 1999 LS400 PM-spec
-Platinum VIP-Figs Engineering
2. 1989 Toyota Supra white package
Current Status: -500 Internal System Error-
3. Black 2004 IS300 -Manaray-HKS-Eibach-
4. Ebony Teal 1995 LS400