R-Shark looks interesting with that larger rom over the 4 usual positions, those should be the sprite roms, so I bet they've changed the data.
> Corrado verified clocks on bootleg Raidens > > https://youtu.be/_FF4N9mBxao > > > Belike sent us a dump of a bootleg of Super Cobra with alternate changes > > https://youtu.be/CZRRVACtC3A > > > coolmod dumped an alt version of R-Shark > > > frsj8112 lent us what appears to be an original Gigas Mark II