In 2010 I finally had to replace my exhaust system from the Y pipe back. Difficult to source much. I got everything except the CAT from here System was ANSA made in Italy, all bolt-on stock but the muffler had a throaty sound. You won't find the part searching their site so you'll have to contact direct. It won't last as long as the OEM but in NC it'll do pretty good.

92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles