If your total weight (car and you) is 3275 then their RWHP is 369. That is about 443 at the crank. Even if DC is lying about the SRT6 HP, not 330 but 349, that is still 94 HP! That is a little over $21/HP. If the SRT6 HP is really 330 (I don't believe that) then your HP increase is .... well, you get the idea!

Normally to gain 94 HP you're talking major mods to an engine. To make this kind of HP in most engines you're talking cams, carbs, etc.

http://www.aspracing.com/frame.htm