ohh, yea, that is definatly not a t25 flanged turbo.
the first thing ur gonna need to do is fiure out what flange that is. shouldnt be too hard. look around some evo forums or something, u can probly just yahoo it real quick and figure it out.
and then u can look around to see if someone makes a KA exhaust manifold with that flange, but i dont think ive ever realy heard of it unless it was custom done. which would be your other option, might be kinda spendy but it would work to get a custom manifold with whatever flange on it thaqt u need.
and then u have the option of getting a custom flange adapter made. so u could get either a t2 or t3 flanged turbo manifold for ur KA, us a flange bolton flang adapter that will allow u to use ur evo turbo, and then if u ever wanted to get another turbo, u would just need to remove the flange adapter.i came across this seller on ebay that does this kind of work, can also do custom pieces that arent already for sale.
pretty cheap too, here is link to his ebay store:
http://stores.ebay.com/MC-Moto...QtZkm
given ur situation and the possibility of changing turbos in the future, getting one of these with one of the many T3 flanged exhaust manifolds out there would probly be your best bet. u tend to have more manifold options if u go with a T3 flanged manifold too.
let me know if this helps