RE: First Things First
The very 1st thing I will do to my Challenger for performance is to add a mufflers ala Flowmasters Series 40's unless it is determined the the air input is limited by too small of a filter (in the pictures
the surface area appears to be adequate but not sure).
Other things to consider would be a throttle body change. Gosh I would hope the headers and exhaust pipes are adequate.
An underdrive pulley system and maybe reprogramming the computer.
Only after the engine is free breathing and all restrictions have been removed then I would consider a supercharger.
I would make sure that every modification I made would still be somewhat reversible to factory stock condition(like keeping the original mufflers etc.).
These are just some things I would consider.
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