art carr 10" 4500 stall nitrous convertor with anti ballooning plates,i got this with a c-4 setup and the stall wont work on my setup.im looking for a 3500 stall for my 351w with 76mm turbo so i need to sell this.im open to offer because im not really 100% sure what its worth.the convertor only has about 10 passes on it from what the guy i got it from told me.if you have any questions please ask call or text me 727-565-5678