I replaced the MAF with a used one, and am declaring victory. (This is the 2nd SVX with the same symptoms that the MAF fixed, by my count.) I bought a used Air Flow Sensor from a parts place that I found on Car-Part.com (details below), it was only $40 + $10 shipping. Only problem was I had to buy it COD (used a money order from the Post Office) since they didn't take plastic. Too bad all SVX problems aren't this cheap & easy to fix...
Part name: Air Flow Meter
Web Portal: Car-Part.com: Used Auto Parts Market,
http://www.car-part.com
Vendor: All Foreign Auto Parts
My experience with them: delivered in a few days. Part was dusty, but cleaned up easily, and works. Hey, at roughly 20% cost of a new part, a great deal.
Tip: look for an ad that says "Tested"
Part Number: 22680
... yes, they have more available.