There is a such thing as having too much power for what you're trying to accomplish. If you want to use the MKIII for drifting, you only need between 250-300hp, so why build up an engine that puts out 1000hp? That's overkill. If you're using the MKIII for autox, the fastest you'll probably get up to is like 55mph so again, why have an engine that puts out 1000hp when you only need about 250-300? Comparing an NA-T engine to the stock GTE you get more power out of the NA-T in the low and mid range due to the high compression, ideal for drifting and autox. So like bluemax said, it all depends on what the driver wants and is trying to do.