Good thing they re-worded it. If I'm interpreting this correctly, it simply means that for example selling headers without catalytic converters are going to be illegal in the state. If those same headers have cats in them, you're in the clear.
All I have to say is, thank goodness that FL does not any emissions testing, 'cause the first thing I'm going to do if I get any sporty car is remove the cats and put Hookers and Corsas on!