I don't have a supply of CPU waterblocks that I can try stuff out with. I have to try and make it as broad as i can.
The Vreg block will work with anything. That was the original scope of this project. Then people here started asking to cool the chip. I said I would give it a try. So far it looks like people will be able to use it. let this first batch go out, and see what growing pains the first folks have. I know some people are pretty stubborn with fittings to make it look good. I may be able to get a little bit more room, but this batch has to go out as is.
To give you an idea of the tolerances that I am working with, take a look at this photo:

That 470 e33 chip (cap?) was making contact with the block. I didn't like it, so I had to adjust the block.
here is a 1/2" ball bearing placed on for scale:
That lip that contains the O-ring, is 0.018" thick.
Eighteen thousandths of an inch thick. It is still strong, since the shape of it is an arch, and we know how successfully the Romans were with the arch. I couldn't bend it with my hands, so it will work fine. But that is some of the geometric tolerances that I am working on, on the left side of the block. I haven't messed with the right side since i have no idea what kind of CPU blocks people have. I would MUCH rather make a block that was more compatible with your CPU block, then have people be picky with fittings. Just makes for more happy people. I'll be at it for another hour or so until I call it a night if you guys have any more questions. The delrin is up next once I program the coding to correct the current batch to avoid that cap. Other then that it makes solid contact with the SB, and that chip below that LR23 inductor.