You'd need a bucket of top-end power, and higher gearing to boot. Unrealistic amount of work really. Performing better within the original operating band is easy enough, but pushing beyond that needs more. Cams and breathing mods stop the SV from runing out of puff before the redline- mine keeps on going long past where a standard one gives up, but it still takes a looooong time to rev out. If top speed's your fix, chop the SV in for a Blackbird or older ZX.
And as Rictus mentioned, don't think too hard about what your 142 actually is