Im interested in getting a turbo for my 2005 ram 1500 hemi. if someone has one used and still works let me know, if not how would i go about building my own? is there a way to do it? what kind of turbo would i need to get?

 

Try http://www.ststurbo.com, they have lots of options, including universal turbos.
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If you have to ask how to build one, don't go there.

Do you have any idea of what is needed to put boost on a 5.7 hemi truck?

Sizing for the right turbo for the truck.
Tuning and availability of controlled extra fuel while on boost.
Timing retard while on boost.
Streetability when not on boost with the tuner, etc.

 

You have a lot to learn young jedi. Don't even touch a turbo until you learn as much as possible.

 

For starters, read "Maximum Boost"...at least then you'll have a slight idea what's involved.