How many have to be built before its alowed in SS?

It says here 2 were built. All aluminum 350 250hp. And I remember reading somewhere that this engine has 11:1 compression too! Probably a bowtie block...and im assuming of the 50 somthing built only 2 or more got this engine.
http://www.indypacecars.com/1982.html
FED 387...you always reply like you are upset. Lighten up its Christmas bro.