The only one that's a bolt on is the kit made for 01-03 Rangers by Whipple/Ford Racing. They're super rare. Any other form of boost will be custom.
My order of operations for 3.0 performance starts with cheap/easy stuff and gets progressively more in depth and expensive:
1) Anybody looking to improve performance in a Ranger should start with the throttle cable mod/zip tie mod. There's usually some slack in the throttle cable that prevents it from fully opening. It's a super cheap and easy way to resolve that issue if it's present.
2) From there we start to get into Vulcan specific stuff. I always recommend a crank underdrive pulley and e-fan conversion. They're both fairly inexpensive, and both will free up some hp and you'll get improved fuel economy at the same time.
3) If that's not enough, you can start adding intake/exhaust components (depending on the year of your truck). Cost starts to go up with things like headers and quality catback exhaust systems.
4) Roller rockers
5) Port/polish work
6) Full engine builds/boost
http://www.moranav6racing.com/category.html?CategoryID=36 has some options. The hp claims seem pretty optimistic to me, but it's nice to have choices.