Where do I submit for this?
You can open a support ticket here https://support.hptuners.com/
HPT Staff - the upgrade is showing currently out of stock do you by chance know when it will be available again?
68 Charger R/T - #'s matching 440/auto car, 499/727/3.91.
71 SWB C10 - S488/LQ4/billet 4L80E.
80 Scout Traveler - L92/6L80E, SOA/35's
Figures...just picked up two Polaris SxS and now need to ugprade to the MPVI2 and can't get one. Is there any way to get notified when they are back in stock?