Well I would start with a '73 crew cab long bed. Take it to Jon and get it to lay frame. Then get a fully forged LSX 502 with twin 96's. 6 racing buckets with 5 pt harnesses and full cage...gotta keep the kiddos and the wifey safe. Paint would be a pearl white with a little red pearl mixed in so you can see the red come out when you get light on any if the lines. Wheels would be a set of 18's up front and 20's out back for street...not sure what style tho probably some 5 spokers...and skinnies up front with 20" wide slicks out back.
Then I would get to work on my truck. Finish building the 6.0 into a fully forged 370 with about 10.5-11.0:1 comp with a custom grind boost cam and a single front mounted 76 or 80. Get a 4-link done by Jon again with a little drop added...probably about a 4/6 overall. A full cage so I can still be safe on the street. Fuel cell and mini-tubs. New wheels and rubber. Probably a set of black SSS 20's for the fronts and have a set made that are 12" wide so I can have way wider wheels out back like a 405 or so. New paint either a flat white with blacked out lights and grille and color matched everywhere else, or a new super glossy white with color matched everything.
After all that I would pay off all my debt and my parents debt. Buy them a new house. Buy myself a new house with a big ass garage to store all the trucks and quads and boats and other fun stuff. Then donate 50% of what's left to charity and put the remaining amount in a savings account for my kids.