Nothing.
This is an awesome car I have it set up for drifting using a Nissan Skyline GTR RB26DETT engine.
This car goes like a rocket and handles amazingly.
I have put 2 BRIDE racing seats in it and these are very comfortable.
There is a lot of room in the front of the car.
How the heck did you fit a RB26DETT in there? I'm not saying I don't believe you, I just believe you're a miracle worker, also, how has this affected the handling of the car?