As much as I love turbos on slant sixes, for a first car effort, I have to agree that dropping a 360 in this car is probably the best idea for someone who doesn't have a lot of emechanical experience.
If he could be happy with a 14-second car, he could keep the engine he has and go the conventional, normally-aspirated hop-up route by adding a cam, headers, maybe a 500cfm Holley 2-barrel carb on a Super Six manifold, and adding an 8.75" rear end for an easy swap to some 3.90 or 4.10:1 gears.
I think along with a .100" head mill, that would drop that car into the 14's and you can have a lot of fun with a 14-second car...
Turbos are the way to go a lot faster, but they just require too much in the way of experience and know-how for a first-time effort.
At that point, I think there's simply too much to learn...
If there was a bolt-on turbo "KIT" it might be feasible, but there's not; you have to make everything...
My 2-cents...