Advice building my square body

[Hotrodrobert]

Hello guys!
I need advice on building my truck. I have a lot of parts on hand and I want to sell the best truck and use another just for junk hauling, some performance.
I have
454 bored .100", stock crank, square port heads, B&M 255 blower with 16 rib drive, blower modified Holley 850, MSD 6 and distributor, several cams from mild flat hydraulic to pretty hot street solid and hydraulic roller cams, headers, etc.
383 with 6" rods, several cams, hydraulic flat and roller, Chevy 882 heads, Vortec heads, and RHS iron 200cc intake heads, Performer Air Gap, and available single turbo that can make about 500hp, 500lbft. headers, etc.
700R-4 that is fresh from a Vette and a 2800 converter, extra heavy duty everything inside.
400 Turbo, fresh with shift kit, good parts, 3k converter
B&M shifter for either trans.
Dakota digital dash
Vintage Air AC
Original AC
14 bolt rear with disc brakes, 3.73 Posi, Moser axles, fresh
74 Longbed with new fenders, cowl hood, doors, bed parts including new sides, front, tailgate, new seat upholstery, carpets, all new suspension bushings replaced with urethane, new swaybars fron and rear, new 4" radiator, dual electric fans, steering box, tilt steering just rebuilt, new aftermarket steering wheel, wheel was moved down the shaft because the owner was so fat he couldn't get in. Much more.
87 Shortbed with good body, no drivetrain.
76 Shortbed with excellent cab, some rust on the bed sides, the doors, fenders and hood are held together with paint and rust but all the bad parts can be replaced from the longbed.
The original owner died and they tried to sell the truck for 3 years and everyone was ready to buy it until you said "LONGBED" then you would think you slapped them!!! I bought the truck with now no cylinder heads and a rusty shortblock but everything else just perfect.
I want the most return from the one I sell and the other will be just fun for me

What should I build???
Any advice and opinions on the best combo to sell would be most appreciated and then I will build the best I can from what is left.
Thanks in advance!!