ANH stunt helmet scratch build- (help!)

[LookSir,Droids!]

Hey guys , I'm an aspiring maker embarking on a project to create a TK stunt suit, building a vac former etc, I also have access to a 3d printer. I am in need of a set of rough, standard measurements for an ANH stunt bucket,  as I've searched the interwebs and found no accurate dimensions. I understand suits are tailored to the user , but without a start point its real hard. If anyone could at least help me some , any, rough data, it would put a smile on my face, and help a TON. I'd love to start a build thread on here as well, when I'm able to get started. Big thanks

[LookSir,Droids!]

With extra research,  it seems the lid is 12 inches cubed approx, based on rpf and other sources.

Crisis averted