Exhaust questions

I bought a T3 Turbo. Got the rest of the parts on the way :) Anyway does any one know what size exhaust I should use? I was thinking a 2.5" exhaust would be enough? Also does anyone know where I can get a downpipe?

2.5" should be ok if you arent planning on lots of power... 3" otherwise. What are the "rest of the parts"?

yeah...2.5" is the smallest diameter reccomended and 3" is the norm

2.5" should be ok if you arent planning on lots of power... 3" otherwise. What are the "rest of the parts"?
The rest of the parts are things like the oil lines, rebuild kit, injectors, fuel pump, exhaust, intercooler things like that