I have a mid 90s Humu I bought new originally. A fun bike but the frame at the rear is low enough so you might have difficulty finding a rack that will fit and be level without making your own front rack straps. The most obvious change I see is mine has a straight frame top tube. The original wheels were single wall and I tacoed the rear one fairly quickly. It is quite light weight for a cruiser. BTW the original full model name for it was the "Humuhumu Nukunuku A Pua'a" and the full name is spelled out on my frame.

Mine now has a old Sturmey Archer 5 speed alloy hub installed, the S5-2 Alloy, that I recently got as a NOS item. IMO that makes it a lot more versatile bike. I have also upgraded to newer & better cantilever brakes.