Wilks

I am not very mechanical, I found the Header L and R drain but where on the block are they located? Toward the middle or back? high or low?
Any help in locating them is much appreciated.
I have 500 efi

Thanks

There's one on each side of the block, about middle up and down front and back. They are easy to get to once you find them, just have to find the right stance. There are also blue plugs in the fuel cooler just below the sea water pump.