headers and catalytic converter

newish poster, long time lurker here.

I have an LT1 and would like to run mid/long tube headers and keep my cat on my daily driver, however I've read on the internet it seems that headers (specificly long tube) and a cat can cause problems like early cat fouling.

Does anybody here run long tube headers and a cat? Can you describe your setup? The LT1 in my truck does not have the AIR system so the cat would be a one in one out.

Any other thoughts or insight about this would be appriceated.