150 FWHP

[Midnight Drifter]

It's a nice, round number. Tethered to a 2,300 lb car, it might not be blazingly fast, but it's pretty darn quick. It would easily max out the Yaris' speedometer.

That's my ultimate goal. The method I have in mind is via a custom head and supercharging.

The question is, can it be done - and streetable - on 91 octane pump gas?

Or is turbo the only method?

The S/C kits I've seen only seem to add 30chp... if that. 150WHP iirc is in the vicinity of 190 at the crank. Is it doable?

I really prefer that supercharger whine and instant response.

...any input is appreciated.