Help with Seven Sola fork choices

[caseycuda87]

Hey everyone, I have exhausted a lot of resources looking for an answer to the this, but haven’t tried here. This forum was a ton of help when I first started building my retro Seven titanium hard tail so I figured I’d give it a shot. My frame is pretty unique in that the original owner whom I bought it from, designed the top tube to have extra slack and more clearence. With this I am thinking even with the older frame it may have modern enough geometry to fit a 80-100mm fork? I have reached out to seven but without a build sheet they can’t really help.

Below is a picture as it sits today:

Any help would be appreciated. The white brothers fork has seen better days and I would love to open my options to 100mm travel forks if possible.