Purchased Bosch Spark Plug Wires (Item#09146).

I removed plug wires with 00015654. There was a Mercedes Benz symbol above such number. There was also a second longer number 0356301028 stamped on the metal boot.

I purchased a replacement set of Bosch wires with a stamped number 000155654.

My question is the following:

Are these the right spark plug wires for my 1988 300sel w126?

If so

I need to also get spark plugs

Currently I'm using Bosch Super plugs(item#7978)

The old plug I was using was by Bosch Super HR9DC stamped on the metal part and on the ceramic part there was R6 591 stamped on it.

What are the best spark plugs to use for my 300sel car?
What are the best spark plug WIRES for this car?

Please advise