That should do it. For a lower cost but good pump, challenge is to find a Nissan 280z pump. They do show up on eBay/Amazon from time to time. The new Bosch pump hasn't seemed to make it's way to NA. But they can be bought on-line from Europe.

Regarding dampers. There is one between fuel tank and pump inlet. Just a small cylindrical can. In the engine compartment, you will find that the rails discharge into a 3-nozzle fuel pressure regulator. Then from there into another similar looking device - it is a fuel damper - just to keep pressure as steady as possible for injectors.

BTW, later model SLs had a dual pump higher pressure system, but never a djet.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5