Thank you for all the posts. My wife who owns the Vehicross posted her question yesterday. The Vehicross is still in Ohio and my concern is that it would not pass the stricter California limits. The muffler is rusted through and the entire system is close to the end. The high dollar amount is predicated on needing OEM parts. Ordering OEM from ISUZU run about $3200. When I looked at aftermarket catalytic converters they said legal in 49 states except California. I have used the same mechanic for 30 years and have learned to trust him without exception. If I can verify that all Vehicross (1999 -2002) with OEM exhaust systems are California compliant it gives me more options which definitely do not include order new OEM parts from Isuzu