nothing wrong with Compstar. see link below..High profile Engine Builder "PAR RACING ENGINES" uses the Compstar or Manley "h" beam in his 565 and 582 ci
Also for the record PAR'S 565ci makes 1050 hp with conventional oval port heads. He can take the 565ci well over the 1150 Hp range getting a little more exotic..
i have callies compstar rods and a callies stealth crank in my new 565ci..it makes right at the 1,000 hp mark..my heads are a little less then the 3x oval port
http://www.parraceengines.com/engines/582.htm