I bought some at Summit speed shop.It came in a spray can,and it worked very good,Chevy Orange.I have not done the entire engine ,just some accesories,and parts.New water pump,etc.However I am planning on pulling the motor and really freshening it up with the same stuff.You can probably get this at most auto parts stores.

http://www.dalesclassics.zoomshare.com/0.html