That's not necessarily true either dude.
There are plenty of examples of NA-T's running 450bhp+, Rob_SRI, Rich.2211 and my own as three examples.
Completely agree on the cost front though mate. I could have brought numerous TT lumps for what my conversion has cost me, but the power delivery and whole experience of NA-T is something special. Because compression is generally higher than a stock TT, you don't need a lot of boost to make good power, which is available early on in the rev range.
If you look into the NA-T stuff in the states where it is more popular still, they're making crazy power. In fact, TkDav3's car is 600hp+ and is in fact originally an NA-T.
Don't forget the bottom end of the GE and GTE are the same, bar oil squirters and Pistons. All the important bits, crank, rods, bearings are identical.
Please don't think this is aimed at you as I know from previous conversations it's not Tony, but people have a very negative attitude toward NA-T when in reality, 9/10 the people have never experienced one.