Last weekend my brother and installed a new Berk CBE system on the Z. The install went as well as expexted. We did the install in my garage on 2 sets of race ramps. Originally, I had thought about going with Tanabe but changed my mind and went w/ Berk after hearing a similar system at the track. I am very satisfied with the Berk system. The sound is just what I was looking for...more of the euro sound and no inside cabin drone. Berk quality is excellent. It is a little more difficult to install than some of the comparible slip joint systems on the market when compared to the flange type connection on Berk. Anyway, the quality is 1st class. Fit and finish is very high quality as well. To remove the OEM system and install the new system took about 2.5 hours with minor adjusments.
I went with the round slash cut tips over the oval tips. The round tips look better than the oval ones in my opinion...better quality and appearance.
