The best factory head that never was

66plyValiant said
the little red engine I know of was a police spec E58 360 engine, nothing too special really, just good flow and decent HP, the E58 package was made for a few years in different appications

Yup. Express truck got regular production heads. In the truck it was code EH1 instead of E58.

Only LRE with W2 heads was the prototype.