As promised, i'm posting up the test pipes' install pictures and as all of you guys know, removing the stock cats are extremely difficult and it took my mechanic about 5 hours to finish the install
It's a Z1's test pipe, i contacted Jon@Z1motorsports and as always, he gave me a good price and discounts (Thanks Jon!

)
The only downside is the shipping

it was shipped using USPS in early August if i'm not mistaken and it arrived to my door..LAST WEEK

Well, fast forward. I got it installed with quite a good labor cost

Checking up the stock cats
Up close
Then..i was annoyed by the time it took to remove the stock cats..so i just wander around and this was all the pictures that i took..
Got the driver's side installed first (mine is a JDM model)
The differences between stock cats and Z1's test pipes
Checking up on both TPs
The end result
All in all, i'd say this is the second best mod that i've done to my Z. Second only to the Stillen Gen 3 CAI

It changes the sound and mood of the car dramatically and drastically!

I'll upload the video on the start up soon