There was (is?) a US company that reproduced a period correct looking metal cannister reservoir with a screw top, included was a mounting bracket, master cylinder cap with hose barb, and I think the hose. It was a nice kit & looked very similar to a single cannister Austin Healey Girling reservoir, which are easy to find. I can't remember the name or find it in a quick search. It was a nice set-up but I wanted something translucent so I could view the level at a glance.