so let me get this straight
you need
main truss $1500
trans adapter $1300
intercooler $1400 (although you could go with an air-to-air intercooler for less money but would be a custom job)
wiring harness $1600
TOTAL $5800
+ the cost of the 1.9L motor + '05 VW Passat starter + labor (in case some things are done at a shop)
darn, that's way too steep.