Any one know what diameter the inlets are of convertors on a dual cat-con 89 Trans Am. Or anyone know outlet of down pipes for 1.75" SLP headers for dual cat cars?
I am not near the car and want to order some exhaust cutouts before I get the headers welded up

 

2.25"

 

Thanks for the response, I was not sure if it was 2.5 or 2.25. I am ordering some of the Flowtech raceready's from Summit want to get those on there before I get the system finished

 

i am in the same situation looking for the cutouts but who makes a 2.25 " cut out i can only find ones that say 3/8? Also how do you plan on mounding the cutouts i mean where on the system obviously before the cats but it is pritty cramped in that whole piping system beteen the headers and the cats.

ps i have the same header sand they work great

thanks