This is basically a printable adapter that fits in the place of the stock flight controller upon which you can mount another flight controller e.g. AlienFlight Classic Narrow and so on with some double-sided tape.
You might be able to reduce the weight by printing with a lighter filament. I printed out of PLA quickly. Possibly you can drill holes or cut away bits to lighten it up or even remix it :D Good luck! Happy whooping! Fits all Inductrix type frame that I've tested including Furibee and Eachine E010 and E010S as well as the stock.