Where are you located?
What is a deer lease truck?

Price varies across America. If you're looking for a value, well, we'll need more info on your truck. No rust? Any mechanical gremlins? A decent running, no rust serviceable Power Wagon should fetch at least $2k. The 383 is a nice option and desirable in the Power Wagons. I sold a 383 powered presentable 68 W200 last year with some minor rust, scratches, dings, in need of paint but ran very well for about $5k. The economy tanked this year but if the truck runs and looks well, you should be able to sell it. Please be accurate and thorough in describing the condition. Post lots of pictures of every angle.

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66 W200, 440/727, almost back together, restored!.
68 Galaxie 390
70 W200, 392, NV4500, d60f, d70r, hydraulic clutch, p/s, hydroboost, HD factory gauges
70 F250, 6BT, NV4500, d60f, d70r, hydraulic clutch, p/s, hydroboost, A/C
70 Olds Cutlass 455 Convertible, A/C, pw, discs, console
86 Jeep Comanche 4.0, auto, 4x4
91 Ford Ranger shop truck
99 Cadillac Seville
12 Jeep SRT8