How low is your ute. I'm running a 3inch system and my ute is fairly low (tops of front tyres are level with the gaurd, rears are slightly tucked) and I still have roughly 125mm of clearance from the bottom of the dump pipe. I am also running a metal substrate cat which is only 4in in dia and it is tucked up a little into the original spot for a cat. I'll try and post up some pics when I get home tonight.