1. Explorer kit
Bolt on neck
Mahogany body 
Dot side inlays as pic 2
a humbucker hole in the bridge position and a p-90 hole in the neck position

2. Explorer kit
set in neck (glued in)
inlays as the double neck SG guitar 
two humbucker holes as the pic 4

volume tone and switch and output need to be drilled for 2 kits

with pickguard, back plate, no other hardware

body shape are the same with PEX-523 kit