does any one know if they make is a 2.5" random tech cat? or where I can buy one? and what type of flange do these cats have?

unfortunely after spending days looking I can't find any specs on these cats and evewy place I found just had the same unless crap the random tech website had.

 

You could call Thunder Racing and ask them. Or you could call Random Tech.

Their website specifically says they make mufflers in any size, and they do list some "custom" applications for cats, so they apparently will, or can, make a cat any size someone might want.

So call 'em up and tell them about your exhaust system and see what they say. They're nice people at both companies. But keep in mind the time differences from wherever you are. Thunder is in Louisiana, and I think Random is in Georgia.