Hi Luke, I would look out for a good second hand kf with some option parts in the for sale sections of the forum.
Although you already have saddles which will run in the stock chassis KF, I would look out for a car with the low grip chassis conversion. This chassis accepts shorty lipo's and moves the motor 20mm rearward for more rear weight bias. It won't fit the saddle packs in this layout.
This setup will be easier to drive on slippy/greasy tracks.
Also look out for cars with the ball diff and alloy upper rear transmission housing. The alloy housing allows the shocks to be mounted on the rear of the wishbones which also improves traction on lower grip surfaces.
I find the ball diff option makes the car much easier to drive on all but very high traction surfaces, where the stock gear diff works very well.
Hope this helps a little!
