it's really not hard, make sure you have 2 people though, makes it a lot easier.
Putting the T4R on jack stands makes it easier too.
Drop the spare,
remove the factory tie downs
Put the bar up to the frame, put the capsulated nuts in closer to the engine where there's a hole, should be 3 bolts each side. Put the 2 stock bolts in where the original tie downs were, and tighten the bolts down
Put the spare back and you're set. If you want pictures of in installed I can get them tomorrow when the suns up.