KG Engines

I saw their examples a swap meet/show one time when they had a display there. I am curious to know if anybody has their stuff. I have always heard there is not really enough cross sectional area and short turn radius width in factory castings to justify making the rest of the port really big.
Their finish looked really good, the port entrance looked tall, and bowls all looked pretty well shaped, but I have not seen anyone else report on performance of these and I am not a porter so I cannot really judge them by appearance.