Okay, here's some more pics, finally. Looks like this will be the final design, hope that the mill can do it like I want to.
http://koti.mbnet.fi/fiiu/misc/block_water.jpg
http://koti.mbnet.fi/fiiu/misc/block_step.jpg
http://koti.mbnet.fi/fiiu/misc/block_step2.jpg
(total of 40k for the three pics)
The lid is not in the pic, there will be only the hose connectors, "elbow" type. The block will be easy to manufacture because there is no pins to be made. (Maybe in rev. 2, if there ever will be such design
)
Can't wait for this to get milled!