The 360-1 is no longer in production (I believe) and Indy doesn't advertise it anymore.
What head is recommended for (Mainly Street) Strokers over 420 ci?
BTW, the recommended use of a 2.100" Intake valve would most likely be mandatory according to Jim Szilagyi: "How to Build Big Inch Small Block Mopars", SA 104P: What do you think of this claim ? :downtown: