You can go to www.classicar.com and there is 2 very good chat and forum areas to get info on flatheads. it sounds like you have a earlier engine, say early 40's. It has the crab style distributor? The truck should have the 8RT series engine with the side mount distributor. I am also restoring 1950 F-1 pickup.If you need any info, e-mail me at CLUSSY38(No Email Addresses In Posts!) and I will help you if I can.

Barry