Dumps legal?

Probably depends where they dump. If its under the driver, no. If its under the back bumpers like the fox body GT's, yes. I know the law states that the exhaust needs to exit behind the cabin of the vehicle, like side pipes, etc.
 
Hmmm, i was never told that. On my 5.0 i originally had headers, catted x pipe, flowmasters that dumped. An exhaust shop even installed all of it. I took it for emmission testing and the guy said he couldn't test it because it was to close to the axle and his tube would catch on something...although now i look back on it i don't know what it would have caught?