Mate they are fairly easy to fit, the rear requiring a bit more work but not difficult at all.
As for the H brace they are very easy to install, there is two bolts which are very tight and require a breaker bar and a bit of muscle to loosen, but still an easy job.
Just be sure to secure the car well when its off the ground,
on ramps and or stands, do not do it on just a jack !

when you put them on (both front and back) leave everthing loose untill its all assembled in place and then tighten it all down