This is a great hop up for a Df-03 as it adds strength to the steering and I find it easier to service as well.
The alloy is alot stronger in the fact that is is really hard to strip the thread so it all stays nicely put on hard landings whereas if you have a plastic one the ball joints can be ripped out of their holes which will end your race immediately as I found out..
This kit also has alot less free-play and movement compared to the standard plastic one and also has no flex giving you much sharper stearing and resonse.
The blue colour of this also adds more bling to the car to make it that bit better looking.
The only thing that I think could make this kit perfect would be to replace the standard bushings with ball bearings and that would give it that bit better again but all in all a great hop up for strength to your df03.