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Here is a link to pretty much all the information you could possibly want about how to properly and safely install harnesses.
2 years ago on Takata Equipped: Project Gt-r’s New Belts
You should really look into how to properly install harnesses before posting how-tos on such a widely read and respected site. The angle of the belts to the rear mounting points will cause your spine to compress in the event of a crash, possibly causing paralysis. Mounting them at a proper angle or installing a harness bar to correct the angle of the force is necessary for safety. Please try to be more responsible in your publications in the future