you need to contact these guys.
http://www.krcperformance.com/

They carry lots of 4.7 parts for higher hp. I'm a hemi kinda guy as that's what I have the most experience with. There are camshafts available which are their midrange cams that offer 30 to 40 hp with a tune, 20 hp without a tune. There are also cold air intakes which will help and sullivan makes an intake and there is adapter plates to use to bolt and eaton m112 blower to your truck. Check it out here http://www.airram.com/parts.php?categoryid=855 That would be all the torque you ever need. Of course it's all in how much you're willing to spend and how much time you want to take to do the research. I'll help where I can, but 4.7 are a grey area for me.

Justin