Good news fellows , the 86's are now exempt. So 9 more months and the 87's will be exempt.
You really need the cat in place for the test and if your EGR is working , and Eric's emission chip, You should be good to go.
I do not have a working egr , I blocked all the ports when I had the heads done.
I had Eric's chip and a new cat , but the NOX was to high , SO I had to rise the FP just enough to get the NOX lowered but not raise the CO2. Took 3 tries but it passed and that was last year and Now do not have to worry about it any more. Unless they changes the laws.