That's very interesting. I was thinking about trying something similar. I'm really interested in how that works out for you.
How are you going to manufacture the final version? Will it be CNC milled aluminum? I was thinking of making a welded tank from water jet cut 3mm thick stainless steel that looks similar to your prototype.
I Will build in CNC aluminium, 6061, I Think It is enought, I allready ask for quotation this morning, I Hope I Will know something in few days, the Next capacity Will be 911cc of valvuline, I expect to try It and let You know how It works