So I've been shopping around for a Dodge Challenger, but i'm having trouble figuring out which of the Challengers have MDS engines in them. I've been looking specifically at R/T 5.7 V8s. My brother has one and has MDS, but I want some sort of documentation stating which engines/vehicles do. 
Could someone help me out?                                    
                
            
 
             
 




 
                                     
 

 
 
