What is the best way to mount rock sliders

i am starting to build a set of sliders for my GQ and was looking at how to mount the sliders as there is only 15mm between top of chassis and floor pan. Does anyone have any detailed pictures and information on this. i do not want to drill holes or weld to chassis.

G'day Andy, There is a thread here somewhere with detailed pics of the plates bolted over the chassis mount.

I can't seem to find it though. Will keep looking. They were from Plassy, one of our members GU.