But comparing Holley to GM, Ford and Dodge is a whole different deal. Holley is all aftermarket, although they (Holley) obviously target GM first as it is the most lucrative. But tuning a Holley that is installed on a Ford or Mopar is not much different than a Holley installed on an "anything"
Agreed, that is only reason they will do the Demon as it is a Gen three 6.1 Hemi platform but I swapped it over to Holley for fuel mgmt exactly because of software issues from factory I did not want to screw with.
