Newbie.

Been reading about the different HHO generators out there and have been very impressed so far with the Unipolar design.
I would like to hear from everyone who has made a Unipolar HHO generator and how their design is working.

From what I'm understanding so far the Unipolar design appears to have less issues and is more reliable, efficient and does not require a PWM to operate.
I would like to build one and install it on my 01 Dodge diesel. I believe from what I read the diesel seem to get the best mpg with a HHO producing 1LPM. I would be looking at an HHO generator that at least produces 6LPM.
I'm trying to also figure out what is the best spacing between plates (gasket thickness) I've read all kinds of different studies from .70 thousands to 3mm and thicker. Does this change when dealing with a Unipolar design? Does gasket thickness effect the individual cell voltage and amperage? It makes sense that it would if different spacing results in more or less production.
Any advice would be very helpful and your time will be very much appreciated.