My tip to you as I ran into the same thing..... When you transfer the tools from the old box to the new, move a solid set, but leave all the triples and quadruples of the same tools! I'd accumulated so many over the years that I hadn't even realized my drawers were chock full of the same crap! I had something like 42 screwdrivers, 19 pairs of pliers, 50 some punches and drifts, etc. I think I put together 4 full sets of 5.5mm-26mm and 11/32-1 1/4" wrenches in open, box, short, and angled! I didn't pitch anything- actually ended up making room and putting the new box next to the old one, but at least the new drawers aren't overfilled! lol
Working on old cars teaches us patience... and every curse word imaginable!