Well, as previously mentioned, the 500E engine is 100% M-B. It is exactly the same as the engine found in the 500SL save for the Bosch fuel injection system. The 500E uses a different model.

As for the suspension, i'm not sure that Porsche used any Porsche parts on it. Porsche DID design and perform the modifications to the standard 124 chassis required to accept the 129 drivetrain, but it is unclear if Porsche spec parts were used.

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Cheers!

Yen-Hsen Liem
'93 500E black pearl/black leather; 89,000km; 245/45-ZR17 Michelin Pilot SX; 17x8.25 factory EvoII
'93 500E bornit(blackberry)/black leather; 69,000km; european delivery; 245/45-ZR17 Michelin Pilot SX; 17x8.25 factory EvoII
'88 560SL desert taupe/dark brown leather; 89,000km; Euro headlights
'87 190E 2.3-16 black pearl/black leather; 55,000mi
'70 280SL white/red; 135,000mi (original); factory alloys; Euro headlights