T2 motor is gonna run about 900 + shipping . Please be sure to get teh generation that goes with your car ala if you have an S4 car get an S4 T2 engine . Makes the whole ordeal 95 % easier.

That motor set may or may not come with tranny So thats 200 $'s . ECU depending on year should be anywhere from 75-250 $'s . Harness will probally run about 100 bucks as well . You will also needs Boost Sensor from the correct year T2 , Turbo AFM . Walbro Fuel pump or FD .

I would also put in a clutch at teh time you put the motor in and check the turbo for shaft play may be a good time to rebuild that as well . No use sticking with a stock DP the RB 2.5" is only 90 $'s and the stock exhuast is only a restriction the CorkSport is only 289.99 . I would also clena the injectors and possibly put 720's in the secondaries as the stock 550's give out around 11-12psi .

With the said mods you should be good for 230+ RWHP Then your going to need to start looking at a FMIC as the top mount is going to be a real heat soaker not that it already isnt stock .