Need some ideas for my following tools wall transplant

I want to transfer all my existing diy tools wall i diy from the 3 unmatch size board into single recessed panel door i pick up from someone disposed in roro bin.But the door have 8 recessed panel with uneven surface intervent the hanging bracket layout,i dont want cut small wood block to fill the blank it will be messy.Any ideas how i can perfectly switch all the tools brackets and attatchment transplant to new door that adopt with the recessed curve pattern.The existing is not bad just but its made of chipboard of different size so that i think all back board in one single unit solid wood is much better.