HOW TO – Famicom to NES game conversion

Mister Joshua writes – “Apparently some NES cartridges contain a removable/reusable adapter that enables one to place the guts of a Famicom game inside an NES cartridge and play it on any American NES console. A step-by-step guide is provided, along with useful tips for determining whether flea market cartridges contain a Famicom adapter.” Link.