Out of all of us Aeroman is best placed to comment. But take a look at the left tyre in this picture and make up your own mind.
If you want more power then I think you won't be able to stop at that, wheels, tyres and brakes would all need looking at.
Brakes I accept are one aspect, but with more power wouldn't you just arrive at that corner a bit earlier and then go round in an identical manner? (that's where the updated brakes may be involved). Didn't Aeroman say that he harried cars in the corners but they pulled away on the straights?
I think if you were looking at improving lap times, or wanted the vehicle to be quicker on the road overall, you certainly would look at tyres (and brakes as mentioned) also, but nowt wrong in wanting more power overall in my opinion? There will be a stage where it becomes ridiculous but it's far from there.
I would add, that the handling characteristics seem to be one of the upsides of the car so actually I would be very reticent to change that, unless as mentioned earlier lap times were important.
