I'll try to be as gentle as possible...

ARE YOU NUTZ! j/k

I don't think you'll find anything out there for the SRT6 as far as intakes that are 'reasonable'. Most intakes out there for the M112 engine (Mercedes engine in the Crossfire) are super charger upgrades.

Why is it you wish to change the intake? Or are you referring to the air boxes (where the air filters are) or the 'Y' pipe where both air intake boxes dump into the rear of the intake manifold?

Or maybe you are looking to get a cold air setup like some of the forum members have done... (do a search on the forum for "cold air intake").

Cheers!