Sharp Famicom Boxes, do you mean just Sharp Famicom systems like the Titler or Twin Famicom? I know the Twin Famicom's look to be a bit heavy.
This reply is about 3 months late, but the Super Famicom Box was a hotel SFC unit w/multiple games. There was also a Famicom unit which took Famicom carts in NES cart shells.
If you want to make money, go to Up Garage and buy every used boost gauge, Nardi steering wheel and 180sx center section they have, throw it all in some bags, and then come back here and resell it all. Margins on car parts are bonkers.