Welcome & congrats, barneyrubble, am seeing the Redheads emerge this winter, which is GREAT to see Your Edge has the 3.7L engine, the biggest update is going to tune it. As far as physical mods go, a different throttle body is available (not cheap), that would require a tune to be most effective. A catback exhaust can be installed, as well as dropin air filter or a CAI. No downpipes available yet. Super Six Motorsports may have ported intake manifolds if you want to go a little deeper.