Cam phaser eliminator.
Seems to be on backorder, but at least they exist.
http://www.shophemi.com/p-2568-comp-vvt-cam-phaser-limiter-kit-for-hemi-engines.aspx
Also pure curiosity, but I wonder if the new 6.2L Hellcat Hemi's timing chain setup is any stronger???... and if it is, would it be interchangeable on the 2009 and later 5.7L motors and the 392 Hemi.
Finally, I would assume (always dangerous) that you could setup Megasquirt. You could use it to control fuel and spark, or simply spark if you wanted to run a carb. Use a lock out on the timing. Remove the MDS lifters, use a cable operated throttle body, and simply fix the variable length intake into the high RPM setting.
Regards,
Joe Dokes