welcome. i have not done what you are planning but i did see an example of a combination 59 Apache front clip with a modern extended cab. looks like the bed is from the apache as well. if you go to the address i pasted below it should come up just scroll down a bit and you will see a light blue/teal truck. not the same as your 1950 but it may give you some inspiration.
https://www.google.com/search?q=59+chevy+truck&biw=1368&bih=764&source=lnms&tbm=isch&sa=X&ved=0ahUKEwitqebPxc_QAhUnqFQKHUDTDxkQ_AUIBigB#imgrc=LPZJQHVaPeAsDM%3A
