OK, here I am sharing another special tip and trick.
Mercedes Classic launches "Classic Parts Search" allowing end users to see parts available for classic Mercedes, young and old, with prices and shipping times!
No G chassis parts yet, but they are growing the list.
For now there are many crossover parts for your G from the W116, 126, 123, 201, 124, 140 lists.
http://partssearch.mercedes-benz-classic.com/parts