Unwin rail/tracking with rock and roll bed

[llyw86]

Hi this is my first time posting, I have recently bought a 14 plate custom and am planning on converting to a camper.

I have today got my m1 rock and roll bed which I am wanting to fit onto unwin rail. I heave been doing a lot of research about the fitting of the rails but yet to find much information on the fitting to the van floor particularly the custom.

I was hoping if there was anybody that has already done this and had any advice or maybe even answer some questions I have it would be a massive help?

Cheers people