I would do the work myself but Im in the field more than I am home. Some or most of the mods I don't have the tools to do the work either. I am looking at finding one of these garages that I can rent a lift and tools for an afternoon.
Even still the blower and tune needed to be done at a shop and the fenders and bumper need a body shop. Some things I just don't have the expertise or experience to tackle. If I was cool enough to have the time at home and the know how I would do it myself too.
I was just going to say that a super charger and fiberglass fenders are probably the only things I would have professionally done or at least get the help of a friend. The blower isn't bad to do, just takes a long time for a novice.