Cobb Tuning is an authorized Random Technologies dealer. They don't have the random listed on their website b/c they also sell their own high flow cat, but if you call them......you can get one. I think they are about $400.
To rectify the failure problem Random Tech has started to use a metal substrate cat. I can't recall the part number, but I remember for sure there is a 7 in the new part number. The old part number 822204 obviously doesn't.
ALL Borla units with the new metal substrate cat has a7 added towards the front.