Following a visit to Mr Crouch, the news is not good
My badly corroded fuel lines have as i suspected, split

,
Basically its a back axle/diff off and all the suspension and fuel lines are to be done, while its off i'm having the diff seals done, and my rusty spot on the rear of the sills done, also the sill covers and bumper bottoms repainted in the orig silver, and the alloys refurbed.
However i've got other projects that need the money at the moment, and Phil can't fit in such a bit job for a while, so i've taken it to the polish car wash, had it cleaned, and parked it up outside work, where it will stay until the new year.
Still, at least i've got the M3 to tool around in