Progress from the Uk..plus help needed

[UkMark]

hi took delivery of my Gmc some months ago, and here is an arrival image and progress to its new stance 7" drop with flip and blocks riding on bags now.
pleased with it so far but need to address the rotten bed, its a later bed 1972 bed and shipping the wood pre cut is out of the question from the states to me in the Uk.

has anyone got plans of the planks layout and sizes for this year of bed?