Replacement shell for Mario RPG?

[Megatron]

Has anyone ever replaced a cart for Super Mario RPG?  The board inside the game is much larger than most other games, therefore the normal SNES shell won't work, at least not without some modding.  Are there any other CHEAPER games that have this type of shell?  I know other Mario games do, but I'm looking for something under $5 if possible.
Any tips would be very much appreciated.

Thanks!

[amarthar]

I'm pretty sure that any game that uses any additional chips should work. Check here for a list of games since I'm not so familiar with game prices in the US.

[wiggy]

Yup. Grab a copy of Stunt Race FX.  Dirt cheap, and will do the job perfectly