Turbos are by far the way to go when you go with forced induction with a V6. The biggest hurdle you will have to overcome is the headers. There are none you can buy off the shelf and they are not real easy to make. This guy builds turbo kits
for the v6 mustangs
and I believe he sells the headers by themselves as well. http://www.tmaturbo.com/
You will also need a blow off valve
and waste gate, I would recomend a intercooler. Your exhaust will need to be reworked and you will also need a tune. A dyno tune would be better than a mail order tune.