Demo truck Ideas?

[Damien]

I've got a '79 half ton lwb 2x4 that I'm using as a parts truck and was planning on scrapping the frame and box as well as a junk cab. Well, I got an info sheet in the mail for an area demo and now I think I might do that, and then scrap it. They allow half and three quarter ton, 2x4 and 4x4 (w/ front driveshaft removed). I think I need 3/4 or 1 ton front springs to raise the front bumper height. I am thinking 4x4 rear hangers to raise the rear. I have a 350 and th400 I could put in it for the demo. It must have the stock cooling system. I don’t know it this includes the fan or not. I also have a 4.3 V6 and a Qjet intake for it. This would move my fan back too. I'm not sure if the engine has provisions for a mechanical fuel pump, which is required. I am going to make a collapsible driveshaft from square tubing and a lot of grease. I think I might leave the heater core in with the fan to help in cooling. I will also make sure I have an A/C condenser in front of the radiator. The rear will be welded. Tires are unrestricted. I probably won't be able to get skid steer tires because of cost. I'm thinking low profile tires to avoid cuts and braking the bead. Also doubling up the tires so they keep their shape with no air in them. Cutting of fenders is prohibited, but the metal can be "pre-bent". I want to find some extremely rusted fenders and bend them for tire clearance. I wouldn't bother with the fenders, but all the ones I have saved are too nice to demo.
If anyone has any ideas please post them. I have done enduro races, but never a demo.