Tedious, but not hard by any means, if you have access to a welder about all you will need new part wise is intake gaskets and some hose to reroute the coolant flow away from the heat exchanger. Once that is done you might set a code for too much airflow, the tune you get from Kerma, Rocketchip, or TDI tuning will take care of that :evil
David, you can get tunes from mild to wild, all you have to do is tell them what you want.
On edit: I did the timing belt, EGR delete, and intake cleaning on Swole's car in one long day, had I not been a bit wore out from the drive there it would not have taken quite so long.