i would say around 500-1000 dollars or less no more though, i would begin looking by asking around asking old farmers or anyone you might suspect who owns these types of vehicles, even try a junk yard you might find trucks there without engines though, so its a tough find btu it will be worth it 100% its good that your trying to find a classic i owned a 69 ford it ran like a champ till the axle blew ALWAYS REMEMBER to add oil to your diffs ! or else it will happen to you its in the process of being totally rebuilt more like a muscle truck it will have a 572ci i will be dragging it at the local track but good luck finding your truck