So a week ago I started a flat bed conversion on my 1998 GMC Sonoma. I search the internet high and low for guidance on hole placement, ride height and other things to find nothing. I am a structural steel fitter so proper dimensions are my pet peeve. I was not going to have the truck when I was building the frame so it was extremely important to get it right. The next few days I will share my experience in this project to hopefully save people some time. I'll check back in a few.