1970 440 Police Interceptor?

I was in a Mopar club back in 1976. One of our members worked at a shop which maintained the local fleet of California Highway Patrol cars. He told me that the CHP had their 440 Interceptor motors blueprinted and the heads ported and polished by a contract speed shop. In that era, the CHP had to contend with high speed runners driving Porsches, Jags, Ferraris, and Lambos. I don't know if it was only the CHP that modified their motors.