On the valve sizes it should be noted that sticking the biggest mofo valves you can get into the combustion chamber isn't always best for flow. Reason being when you get a valve too close to something, like the cylinder wall for instance, it becomes shrouded, that is, the flow cone around the valve gets disturbed causing a huge loss of flow.
Now that said while 3 valves isn't nessecarily bad, and certainly better than 2, it's not as good as 4 valves.
As for bashing the 240s, what do you expect, it's a DSM board, most of it's in good fun too, don't take it too seriously. But I do agree with Jovan in that if you're going to build a turbo motor why not start with a turbo motor, it just flat makes sense.