OK guys, I've got some answers now ready.
# The filter E106 or the match MANN one - definitely not working.
Today I visited again the spare part shop with an old filter in my hand and the pipe with fittings.
The filter's shape is exactly like the original one.
The thread is perfect - the fittings go smoothly to the end.
But the inner hole is different.
Inside filter hole is smaller than in the original filters.
If you look at the pipes on the photo you will see a pipe step of 4mm and a round flat surface.
There is also a small rubber O-ring there.
Inside the filter it's the corresponding hole where the pipe step must go through and the round flat surface is facing the filter inner surface. When fittings go deeper and tighter the both surfaces and the O-ring in between get firmly pressed and everyone is happy.
With the specific MANN filter (match E106) this is impossible - if the hole is smaller, there is no chance the pipe step to pass through.
Moreover the inner filter's surface is not flat but slightly in cone.
So I can't see how the fuel pipe and the filter will be sealed; the petrol will leak out.
# How to solve an already damaged fuel lines as above.
I did it once but unfortunately in Pietermaritzburg despite plenty of hydraulic workshops nobody has such a fittings - obviously they are not popular size; they referred me to go to Durban.
So it was easily for me to supply my old original fittings (I kept them from the burnt Lada which I wrote above) and they made for me fully rubber pipes with my own fittings and the correct length. It was workshop for agricultural machines and if the same pipe works properly in the heavy bulldozers hydraulic system it will work also for Lada fuel supply. No any problems since.
# The pipes from the photo above from Lada Power are not fuel pipes but brake or clutch pipes, doesn't mater it has been written Fuel pipes.
# I've got SCT330 filters in stock; sorry, I can't match the price of 2.99 Euro. The metal injection fuel filter doesn't need replacement every routine service as the plastic carb one (with price ~R16 it's easy to replace it every 10-15 thousand kilometres). I change it every major service in 60000 km - so the filter need replacement once in a few years. By the way I still got customers with their Ladas with mileage under 60000 km - for all these 12-13 years and they run still on the original fuel filter.
Regards
Ventz