I have my resonator and muffler.
I have a stock d16y8 right now with a stock header.

I need to get a catalytic converter.

I will be doing a swap later (GS-R/LS-V)and do not want to re-buy a cat.

Is there a Cat that will fit now and fit later(even with minor modification)?

And for that set-up, where are the o2 sensors? Header, pre-cat, cat, post cat or.....?

and can someone give me a link to the catalytic converter that will fit now and later. Preferably magnaflow high flow...

HELP!?

Thanks!

 

will this one work?

http://www.ebay.com/itm/2-5-Magnaflo...b79c37&vxp=mtr

Will be running 1 o2 sensor (OBDI) pre-cat... right?

or this one...

http://www.ebay.com/itm/MagnaFlow-Hi...331f4d&vxp=mtr

I am running 2.5" piping also...