I just bought the Kenwood DNX5280BT stereo.

Do i get original brackets for it to mount it in dash?
I have the 1DIN interior plate-shield thing in middle of dashboard, so i gotta at least buy the 2DIN one.

Do anyone have the part-NO?
should i buy on Ebay or @toyota? (will of course take the cheapest, but i live in norway and shipping here is extremely expensive, and we have some wierd import rules.)

Here you go : Part number 55405B = 160 - 180€.
Not sure if really part number for the 2 din though. As for the price, I believe all the Toyota dealers should have the same, now just depends if they'll charge you shipping expenses.

My guess would be that you can get it cheaper on Ebay, check german, austrian, italian and spannish Ebay sites (they got most LHD Celicas in EU).