96 chevy has knocking noise thinking collapsed lifter due to knocking is louder on top of motor than the bottom and oil pressure is 60 psi while idle knock is pretty loud but is always there.. found i have water leak somewhere thinking intake or head gasket, cracked head water is a weird orangy color.. what do you guys think on knocking and water leak

 

Intake Gaskets, Orange color in radiator could just be Dexcool.

 

my thing is if water leaked than i would have seen drop of water in radiator right? i have never had to fill it and it was full when i drained it