Did you remove your wheels for the install? SPC's video shows it on a lift but obviously I don't have one so working underneath the car will be tough, even on jack stands. How hard was it to break the bolts? Will a breaker bar do or do I need an impact wrench? Thanks

 

A breaker bar will suffice, and you can work on one corner at a time so you won't need to get under the car. Only time you'd need to get under the car would be to elongate the toe slots in back for the rear camber/toe kit.