Does anyone know if a tikka T3 can be modified to work with Sako components. More specifically can a Sako barrel be put on a tikka T3?

Yes it can as long as the TENON of the threads match the receiver. I had inquired on this a couple years ago...took off a Sako m75 stainless 25-06 barrel (new) and guys asked about it for a T3. I emailed Stoeger and Sako to answer the question. Just need to make sure the headspace is correct by a gunsmith.