Hey, sounds like a very interesting prohject. At the end of the day it all depends on what sort of turbo you put into it. For instance if you are looking to put the same turbo fitted to the xr6t and F6 (Garrett gt3582r) you can expect to pay anywhere from $1500-$1750. On top of this you would have to set aside the same amount for intercooler, bigger cai, wastegate etc... You would also have to take into consideration installation and plan for unexpected issues the guzzle money to fix. Goodluck for the project and I hope it all goes well.