Thanks Mr X but I've had all the arbs done already! This noise is happening when load is both lifted and applied which is why I think it's the prop or somesuch.......100% coming from centre round the gearbox/prop area (seeing as I had my head scraping along the floor listening to it happening

).
It's nowt to do with anything wheel or suspension I tell thee

I'm pretty sure it's not in the gearbox itself as it's not muffled in anyway, you know what I mean.....it's sounds external in it's nature!
I'm gonna get round my mates tomorrow (nice flat drive) to jack the car up and have a real good play to see if I can locate it but I'm not too sure if it's gonna replicate by
manual intervention

.
Just to add, it doesn't seem to happen if I gently apply or release throttle but there's no real rhyme nor reason to it




:brick wall: