I posted this up not long ago, but the issues are still there, and i have narrowed them down. Basically I managed to get the car up onto a hoist, if I pull the exhaust system down, the rattle gets much worse, if i push it up, non existent. It's loud enough it has gotten to that stage if i'm next to a brick wall, I just want to shoot myself, I also sprayed some trusty lube onto the spings on the exhaust manifold, and it went away for about a week. Could it be the springs rattling or something broken?, I tightned the bolts over the spings up as much as I could, but made no difference. It is a very similar sound to what is posted in this thread, though it explains no end problem http://au.toyotaownersclub.com/forums/topic/35263-identify-this-sound/page__hl__%2Bsportivo+%2Bnoise Help would be great as it is driving me insane!