The SRT6 and N/A use different crank bolt patterns and they even vary depending on engine production date. Shoot me a picture of the engine numbers and I'll get you the part number you need. Also, note that even though eBay says it fits an SRT6, it will not and they don't know their azz from a hole in the ground when it comes to these parts. I have send numerous emails to them indicating this and asking for a way to disable that from the search but it has fallen on deaf ears.