>>11234487Most the shoulders with ball joints are compatible with modern builds. The waist can be trickier, sometimes they need a ball joint polycap, sometimes a peg, but the peg is the same size so just need to add or remove the polycap. Legs are usually on a similar connection as well. Trouble really is with older kits without any standardized joint systems. Most backpacks will swap now but occasionally youll get one that wont fit directly like the ground gundam backpack.
