Hi - My '87 (3.2 DME) has developed a small surge/hesitation under acceleration.  Usually noticed in the 2-3 shift between 3.5K and 5.5K RPMs.  Happens under 1/2 to full throttle, nothing under constant speed.  Varies from subtle to a small yo-yo feeling - but I notice it, and it's annoying.   Have Andial chip. Could try to provide more detail about what this feels like.
A few thoughts about what's been done already (all by PO's 

):
6/94  17K miles -  Head temp sensor
...
9/97  50K miles - fuel hose assy
1/99  60K service - clutch, O2 sensor checked, fuel filter, plugs, dizzy cap & rotor.
7/01  65K miles - Techron
So what are the likely culprits?  I was thinking O2 sensor, maybe the DME relay.  Or is it just cr@ppy SoCal gas?
I'm trying to avoid the "replace this, and if that does not fix it, replace that" shade-tree mechanic process.  Any thoughts appreciated.
Don