It will be a turbo build aiming for more than 800Hp. I was planning to install 3.5" but I am not sure if clearance will allow it..3" is maximum sweet spot, no need to go bigger as it's a waste and will knock everywhere on the chassis.
2.5" is better unless heavily modified or you just prefer a deeper note of a 3".
I changed my rear splitter to a mugen style so I guess I'll be okay to stick with the same diameter at the tip :wink3:3.5" would fit but not if you're street driving it. That's going to hit every bump in the road and knock on the chassis constantly. It should technically fit however.
You'd also have to reduce at the end or remove the triangle as I can't imagine the rear splitter surviving long.