I like your truck. I'm doing a flat bed also. Just want to say, air bags are another solution that others might want to consider. I'm not being critical of your solution. Yours is way less expensive and works. I didn't have a set of helper springs available and it was just easier to throw some money at it and have the kit arrive on my porch.
My truck is a 1948 3600

AIR LIFT 57215 LoadLifter 5000 Series Rear Air Spring Kit
Attachments
Right air bag 1.jpg (199.75 KB, 187 downloads)
Right air bag 2.jpg (207.27 KB, 188 downloads)
Right air bag 3.jpg (183.53 KB, 181 downloads)

Last edited by Joel1948; 08/18/2019 4:21 PM.