<p>It was 2.70 until the mid-1990’s at least, for example:</p>
<p>[Busch</a> Wins 2.70 Niagara Contest - The Tech](<a href=“http://tech.mit.edu/V116/N23/busch.23n.html]Busch”>http://tech.mit.edu/V116/N23/busch.23n.html)</p>
<p>I don’t know if it exists in the same form now, either.
2.670 seems quite different.</p>