So it's actually possible to overclock the board of Starfox that contains 4 blobs but you won't be able to get high speeds as you would be able to get when overclocking a Super FX game. I used a 30MHz 4-pin oscillator on the game but Internally the clock is halved so you're actually running at 22.5MHz but that's still a nice increase from the standard 21.4MHz.

I just recently uploaded a tutorial video on how to do this mod.




Here's the game's intro after the mod. (Notice the intro finishing off before the music does.)





Here's a diagram,
Click the link a side here to view the diagram below more clear. ----> http://i.imgur.com/30RYTN7.jpg


Have fun doing this!