if you have air tools handy it will be a walk in the park.
the plate install will depend on which you buy. I bought the 4 bolt MM plates. I though the install was very easy but you did have to drill a 4th hole. this scares some poeple. If you are used to working on cars you will have no problem.
If you get a spherical bearing plate be prepared for a bit more road noise on rough surface. I don't notice anythign on a nice road but if you get in really groved or rutted up surface some times there will be some harmonics you will hear. I wanted a plate that would alow me to run coilover if I ever wanted to.