At the end of the day this IS why building half of these cars is pointless, the overall packages are not upto the job and so the cars are merely used for not much more than willy waving competitions.
Don't get me wrong 600hp in YUM must of been ballistic BUT it still broke a gearbox and it may of done another even at that power, quite pointless IMO to only have a dyno printout but not re write the record book as it was made out it would do.
I'm using YUM as an example but there are MANY other cars out there like that, the key is having a good overall package and lets face it very few can afford that. Atleast with that they realised the hassle, took a step back and thought fuck it it needs to go as where does it stop !
It has taken me that long to realise it with my own car, several engine changes later I realised I needed a car that when I open it up isn't likely to break somewhere costing me a few grand or even worse 10k plus to repair, you have to live within your means and half of these cars do push people beyond on that but they choose not to look at it that way.