Looking for Super Nintendo / Famicom

I need a system that plays both Japanese and US games.
I know there is a converter for Super Nintendo for playing Super Famicom games.
Are there converters for Super Famicom to SNES?
I'd rather have Super Famicom system and play SNS games on it.

Yep, there are converters for SFC to SNES. I have one called Game Doctor SF or something like that. It doesn't work with chip games like Starfox though.

If it's an american system you don't need any converters just remove those small plastic bits next to the connector and any Japanse game will work perfectly.

For a SuperFamicom, you need to expand the cartridge door to make an american cart fit. There's no region protection between Jap and US.