So recently got my scooby back on the road 95 import impreza after a long time mot went grand and all good drove away and got up to about 40mph for the first time in quite a few years and a loud clunking banging can be heard and felt in the car feels as if its the propshaft but no sings of anything when you slow down the banging slows down you go faster it gets faster anyone got any ideas or previous experiences like this cheers appreciate the help

 

I suppose the obvious thing is to get it on a lift to see if anything is loose./ touching / rusted away / broken brackets / shredded bushes.
You should change the diff oil anyway .

 

just seen this all bushes was replaced and no rust but issue was found my exhaust was touching the gearbox mount underneath everything was very tight