Cajun has always had the JBA shorty package with HF cats but the cats are not CARB complaint. I have heard FMS performance in CA is using Valina cats and I did a little research myself and found that the Valina cat is the only universal weld on cat available that is carb compliant, not that I didn't trust the guys who posted before. How this converter is legal and companies like Magnaflow, Eastern Catalytic do not offer anything is beyond me, politics I guess. I know absolutely nothing about the durability of this cat especially mounted to the JBA shorty but it's the only option for Ca guys. I have a call into Car Tex the producer of the Valina cats as I type and if I can work a deal out with these guys Cajun will have a Carb legal JBA shorty available soon for you guys in Ca. move over FMS!! This will likely not be a bolt on application as the cats are too long to fit stock bpipe so these will have to be fabricated to the stock bpipes to fit. Any exhaust shop should be able to tackle that in a few mins. I also have a heavy metal non high flow cat I can use in the bpipes as a option for guys who do not want the HF cats I use now. I will keep the forum posted on the progress.