I don't know about that needing all new brakes and wheels. I have the Grove gear and used my old stuff. I've landed in some real narly stuff and the Grove takes a beating and keeps on tickn' real glad I have the Grove.
I believe they have an axle that keeps all your old wheels and brakes.

I few times I've landed where I went into a 3 point and had a drop out. must have dropped a good 5 feet. The grove held up nicely, I didn't bounce, just flopped onto the runway, or grass. Would have broke the bungies if I had them. I call that my full stall landing.