Newbie From Texas

Well another newbie here. Just purchased a 36 international pick-up on a dodge d50 frame and have decided to build my own ladder frame because I want a spring over or drop front axle (I don't think this frame can be modified to make that work) and a few other reasons. My question here does anyone have a good blueprint/plans with measurements for a simple ladder frame with bracing that I can use as a starting point? I have looked on ebay and CCR and those seem to be mostly for t-buckets. Any help would be appreciated. Here are a couple pictures of the truck. I have spent a couple of days browsing here and the information is great.

Thanks
Larry