Alfamud

Hi everyone,
I used to do my own small jobs for my cars, for example on my Toyota bj70. But I'm not certain on my new w126 87 car with 103 engine. I found almost everything I need to do the replacement of the timing chain and serpentine belt. I even have the gaskets for the engine but what I cannot find is the main gasket for the distribution, only a top gasket. Does it have any gasket or does it use sealant?. See attached my cart for parts to fix some issues I have with the

inyection of fuel and oil leak from that distribution plate.