I currently don’t have a 6V Convoy driver. I do have a ‘Seeknite L6T’ I recently purchased (very cheap) from Banggood, which is almost a Convoy L6 clone/copy. Unfortunately that driver does underperform substantially, but I might swap in the 6V/8A L6 driver from Convoy, which should be able to fit (nicely) as far as I can tell right now.
I do have 2 M21B’s with XHP70.3 (6V/5A driver) coming in from Banggood, given that they were (so cheap) on sale, that they were almost the price of a M21B host, directly from Convoy. (But with an expensive LED and driver as a bonus.) But I expect those take at least another week to arrive, since Banggood was slow with shipping them out.
But yeah, certainly in that Seeknite L6T flashlight, which is a big(ger) flashlight with quite a lot of mass, I think a 6V 12A driver, or maybe a bit more, should work out quite well! (Pushing it close to/over 7000lm according to Koef3 his test.)