I recently bought a Type R rear sway bar and I intend to install it in my 2000 gsr. I bought this bsq or something like that kit which it seems to make it fit perfectly, but some people have been telling me I need to reinforce my stuff under the car. If thats the case could someone please tell me how to do that.

 

They mean to reinforce the subframe which can tear. ASR makes a subframe protector thing, pretty popular choice. Although, its pretty hard to tear the subframe especially in just a street car.

 

Since the rear subframe is reinforced on the ITR, I would consider the ASR or Beaks kit mandatory.
An ounce of prevention is worth a pound of cure, after all. )

 

the BSQ kit you bought is a common solution, just use that

 

Thanks to everyone, I appreciate the quick and knowledgeable responses.