OK my turbo just recently seized.....Bummer right?

And looking for a new one has been harder than i thought it would be. I was wondering were the best place to find one would be. Its the T3 off the Apexi Kit for the Z6 motor. AX53B60 P18 I believe is the turbo. I'm looking for the cheapest possible way to replace this thing. But if I have to suck it up and buy it right from the manuafacter then I will. The problem is finding a turbo that will fit my mani (T25 flange) so I wont have to get a new downpipe.

I guess whats the best way i can just replace the TURBO.