1998 Saturn SL SOHC block with DOHC head?

Is it possible to put a DOHC head onto a SOHC block?

I have a 1998 5-speed Saturn sl

Not sure, but don't bother... Saturns are crap. Look up the KBB value of your car, find someone naive enough to buy it as is, and if you're going to buy a cheap, 17 year old car, next time go Japanese... I would recommend a Honda.