Two different things...
I'm not what you're asking about here. Either you need to know how long the steer tube on the new TALAS needs to be to fit your frame, or you're asking how much travel your new fork should have to handle well on your frame.
If you buy a new out-of-the-box TALAS, the steer tube will be way too long for your frame and you'll have to cut it to size during the installation. If you don't know what I mean, a shop should do this for you.
The good thing about a TALAS is that the travel is externally adjustable and you can experiment with settings between 85-125mm by turning the blue knob on the right fork leg. I'd guess that you'll be happiest somewhere between 85 and 100mm travel for your frame like the above poster said.
Good luck!