I have a RAM6130402 from AMS, and I was wondering if this clutch with MAYBE 400rwhp or over would it hold?? And if I wanted to go with a 913 what would I need, do I need just the disk? or would I have to get a new pressure plate? I havent dynoed the car yet, but I have a full bolt on set up and I am assuming im gonna hit Hopefully over 400rwhp (HOPEING)

 

Should be ok at 400hp. As long as the pressure plate surface is clean and flat, you can change tothe 900 series disc and just sand off the friction surfaces.