wow.. uhm.. There's only a couple things I can say to that..
Number 1: Why?
Number 2: There's a lot more to converting an EFI system to a carburated one, and I understand my knowledge of the Ecotec itself isn't much since I don't own one, but I don't see how that 'conversion' unit connects to the intake manifold.. It just appears to sit on top, replacing the valve cover.. I see what appears to be a replacement intake gasket, but where would the unit actually connect to the intake?

Then there's that small matter of the ECU.
Anyway, looks interesting, but it also looks like it would of been something left over from an April fools joke web page.
Interesting, none the less... I guess..
-Matt
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Its an SBC manifold in that stock photo. I know, I assisted in installing a 3 carb intake on my fathers car and have done numerous teardowns on older GM V8's
Also, sites like that one often times have errors in the product listings...
us auto parts is about the ABSOLUTE WORST company out there , they have no clue what they are doing and dont give a ratts ass when something is wrong