Scorp, I just wanted everyone who's following this string (who haven't seen my own scammer alert fable) knows how helpful you've been to me in my pursuit of the infamous Sleeths. You information, suggestions, and encouragement have been at the backbone of driving the Sleeths into hiding (at least for the time being).
One concern, I'm not certain yet, but I think I may have spotted a new ad on EBay that looks very much like the format the Sleeths use. I don't want to cause any harm to an innocent person, just be advised to be very, very careful of any ad for a pair of Holley 4224 carburetors. There is more than one ad running on EBay for 4224's, but there is one in particular that looks very Sleeth-like.
Anyway, many thanks to Scorp for being the model to emulate in the scammer-hunting business.