I have lovells in mine, and it bought it to the exact height i wanted.
I dont have a 'rolla wagon, but just pitching my $0.02.
See the before and after pics:
http://homepages.ihug.co.nz/~doms/before.jpg
http://homepages.ihug.co.nz/~doms/after.jpg
The pics dont really do it justice. Because the first pic is taken from a slightly higher level than the car, you cant see how much of a hilux it really was, it had HUGE guard gaps.
Now, there's pretty much no guard gap, (note it's settled a little since the pics) and the wheel fits in the guard PERFECTLY. I would change the height one bit.