Ok,
If you dont want to lean out your motor, here is what you do.

Get 2 1/2 inch piping from the headers to the cat.

From the car get a 2inch Y with 1inch tips coming off the Y pipe. Meening use a reductor to get it from 2 inch main to 1inch pipe.

Then get 1 inch piping to your 2 mufflers.

Then just cut a hole out for your new mufflers.


Any other way will hurt your engine, even more because its a DX.