Quickest way to solve DOHC/SOHC question, you don't even have to raise the hood.
Flat hood = SOHC
Bubble or "power blister" hood (looks like a small dome on hood) = DOHC
Another way to tell is the exhaust.
Singe outlet = SOHC
Dual outlet = DOHC
Now you know what every 95-99 (stock) neon has without looking inder the hood.