This topic has been discussed a lot here (mostly by me), so a search will give you more details.
There is a difference between passing the test and being legal.
In califonria none of the kits are legal and none of these kits will pass a state with a visual inspection.
Almost any kit will pass a sniffer test at idle, though they may not pass a rolling dyno test.
The Federal Clean Air Act makes removing or modifying any emissions equipment illegal. The Minnam kit requires removal of one of the cats which is clearly illegal.
Usual dislcaimer - I'm not your lawyer. YMMV. I'm not talking about getting caught, I'm talking about the rules. This is all merely a discussion of this issue.