Will a dohc head fit sohc Saturn motor?

No, a DOHC (dual overhead cam) head will not fit a SOHC (single overhead cam) Saturn motor without significant, and likely impossible, modifications. The engine block, valve locations, and overall architecture are fundamentally different. The bolt patterns, camshaft locations, and even the size and shape of the head gasket will be incompatible. It's not a simple swap; it would require extensive machining, fabrication, and custom engineering, which is usually not practical or cost-effective.