Looking around this morning I came across a post by Mitko Here, looks to be very close to the one I linked for you and Mitko mentions stuffing an XHP35 in it. Might ask him about the host itself and how well it’s holding up to the heat.
ETA: Since this is so relevant to both our interests I’ll PM Mitko and ask him if he’ll join us here and share a little about his build.
Also, I just now saw where that light was cordless, DOH! I totally missed that last night, I’ll blame it on the lateness of the hour lol. When I saw the design I just assumed it was 12V because all the other similar lights were, should’ve opened the description and read, apologies.