Brynk,
Check here for some ideas on motor mounts for dropping a 250 in the truck. Most of these are for V-8s but I would think that you could fab up some mounts and mount them to the frame with a biscuit style frame mount.

SpeedwayMotors;
http://www.speedwaymotors.com/Shop/Classic-Truck-Engine-Mounts/15.html


Az Chapter Head


34' Ford Cabriolet Ford 300 & C-4 under Construction