I sent a question about the part brand. Here is the response:
They are made by Hamburg Technic of Germany.
Tremendous Parts, as good as Original.

Buy it now & its on its way to you in the morning.

Best,

Team DP USA

On a scale of 1-5 how difficult would it be??
I have a spring compressor, and the ball points are already installed on a complete tie rod assembly.

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic