well aslong as you can get the car nice and high on axle stands, you can do it road side. just make sure you cover the little things, like new turbo bolts, gaskets ect and it will be ok, getting the oil feedline back can be awkward. just make sure the washer goes under the banjo or you will get a leak.
its not to bad, but things like removing the down pipe cat which might be rusted in the exhaust are the things that take time, and remeber not to smash the cat with a hammer to remove it or you will damage the cat.
preperation is the key, not hammers and screwdrivers!
