Guys, I just finished installing the harnesses and had a testdrive. Let me summarize:
- I did not do any cutout, however the bottom one that should prevent the submarine effect is not in the perfect position. As for the shoulder straps, well I am tall enough to keep my shoulders and not the seat (1,86m).
- I used extra reinforcement for the seatframe where the harnesses connect to it.
- I also have the harness bar installed properly as everyone else does.
I agree to the comments where people match a perfect harness to the perfect match, but for me as a hobbi driver on trackdays the present solution is a good value for money version that serves me well (hopefully for a long time)
While driving it holds you stiff in the seat and you can forget about grabbing the steering wheel and stiffen your legs to stay in the seat. On high speed corners you may miss the side support of your seat, but this is again another story.
On braking full power it also serves well.
I can hardly wait until March/April where the first trackdays start