FIA Spreader plates for seat belts

[gapyear]

FIA Spreader plates I am fitting some Luke Harnesses to my 350z I have the spreader plates but no diagram as to how they are best fitted ,Does anyone have a diagram .It may seem elementary to you all ,but are they fitted and welded under the car which is obviously stronger or is it ok to weld them to the top?

[Ekona]

You can weld it inside, if you were using a bolt-through one you'd want to mount that under the chassis. At least, that's my understanding of the system, if you're still unsure contact the MSA for clarification.

[gapyear]

Thanks Dan much appreciated