1.5 Honda
Guess I'll chime in. Anything you do to a SBC or SBF or any other engine applies to Honda or any engine. The more fuel and air you can get in and out efficiently, the more power you'll build. But, if you really want to race you need to step up to a V8. If it works on a four cylinder, just think what it can do with a 6, 8, 10 or 12 cylinder. All it takes is money and more money.