Use a length of 5/16 hose and insert it between the runners of the upper intake. Put one end to your nostrils and sniff. It could be a leaky O-ring on an injector. Next place is at the fuel line disconnect down below the right deck lid hinge.
I was smelling raw gas all day Saturday, but never found the source. Whenever I filled up, there was a little puddle of gasoline trapped at the filler. I attribute that to some hard right turns somewhere along the way. On the 87 and 88, the vapor canister underneath the right rear fender could also be a source. Those are the easy ones without getting underneath the car.
Next, underneath would be fuel filter connections, and hose to tank connections. The 5/16 hose would be handy in trying to sniff the top of the tank at the sending unit.