hows it going. Everyone is going to tell you to search, THe RS and the GS have the same power train. the samw exact motor to the T. The best place to get a turbo is Haun Race Craft. They have the best kits. Hope that ansers you question.

Also the RS and GS have the same power Train the GSX and GST have the 4g63 which are tottaly differnt then the 420A

1997 Dodge Avenger I-4 5-Speed
DreamSpeed Cold Air Intake,AF/X Under Drive Pully, ES Motor Mount Inserts, MSD DIS2, MSD Coil Pack, MSD 8.5mm Wires,Aluminem Flywheel,Spec Stage1 Clutch,Crank Scraper, Quaife LSD,Airmass 4-1 Headers, Test Pipe, Bosal Catback,B&M Short SHifter(50%),Symbroski Shifter Kit, Grounding Kit, Solid Front Motor Mount