I've gutted my kitchen including removing all drywall and underlayment hence the studs and subfloor are exposed. I need to add boxes for the new oven and new cooktop. Given the drywall, underlayment and the cabinets will all be new, I can wire the place to suit the preferences of the appliances and electricians. From the electrical instructions it looks like the boxes are mounted inside the cabinets as opposed to being mounted on the wall behind the cabs with cutouts in the cabinet backs.
Is this the preferred method, up through the floor?
I didn't find the right solution from the Internet.