thanks for the replys. yep a brake cylinder brace makes perfect sense. i just uscrewed that thread and the bluey anodised bit is like a cradle. cool btw, it is a nismo strut brace, but i have never seen the brake brace b4.
the fuel thing still has me worried. it seems like the fuel cap doesn't fit right.
does anyone, or could anyone take a photo of the stock fuel cap for me, so i can see if mine is original or not. It has nissan written on it, but now i'm not sure because i have been told that it isn't a skyline cap.
but i will try resetting the ecu later this weekend and see if it does anything
thanks again for the help, muchly appriciated