Only Charger that had a different motor was the base ones...which had a couple of V6's...and they had single outlet exhausts out back...and the SRT8...which didn't have the 5.7 HEMI, but the 6.1.
The R/T's, Daytona's, and some of the Super Bee's had the 5.7.
Thats why full-size cars should have V8s, or in the case of a LeSabre, or Bonne, a 3800 V6, the only V6 that can truly do a V8s job.