has anyone tried out this Large Bore Throttle Plate thing? and what about thier headers, on thier site it doesnt say offroad use only anymore...are they legal now in some states (im sure CA is not)

I believe that KDawg has both on his sasamafras

The headers might have a problem. I helped a guy in Savannah install them and we found that the collector had a gap in the middle of the three tubes. This is bad. So I think he sent them back. It mkight have just been his set, but it's something you might want to ask them about.