Short update
Put car on stands and listened from under the car.
Sadly noise is somewhat "off" once turning wheels by hand (to slow).
No i wont run wheels by engine while being under the car
For sure no wheel-bearing prob.
Noise seems to be out of gearborx and/or U-joint area
(slightly to be heard from both housings via Stethoscope/Screwdriver)
Cant really feel the noise
Even not once driving without floor-wood out and holding
hand to gearbox and U-joint (while driving).
Re-opened gearbox (was long time-open while changing engines)
Tried some fishing in thick oil (NO FUN !!!)
Didnt find things/unnormal things
Didnt find abnormal movement in the gearbox-spindles/axles
Will have to investigate regarding U-joint and upper bearing
of driveshaft...
If the special thick washer and U-joint may have become loose
(as mentioned by Tom) do i have to lower the rear axle to find out about???.
Well i guess i should lower rear end anyway as this is only way to
inspect the driveshaft bearing too ...
Will update
Christoph