There is nothing stopping you building the truck out of the box that way you see where all the parts go and what clearances they have in different places and you see the different ways you can run the wiring, the roof is big enough to hide the small speaker box and the MFU sits nice behind the drivers seat and a peice of styrene onto the back MFU creates a wall hiding the wires....
Or instead of drill holes in the kit crossmembers you can buy nice aluminum crossmember on ebay that are pre drilled
http://www.ebay.com/itm/AL-MIDDLE-CH...item19cb130f8b
http://www.ebay.com/itm/ALLOY-R-CHAS...item2a1544e8f4
Just thought I would menton the alu parts as it give you other options instead of drilling the plastic cross menbers
Cheers Tracy