[TomP]

Good onfo there, thanks!

Question. Is it just the cams that make the firing order different? If one were to use aftermarket cams for the Mustang would it eliminate the need to change the Control Pack firing order? What else is different between the truck and Mustang engines internally? Is the lower compression made by the pistons or are the heads bigger chambers?
Quite a few truck engines available cheap around here but used Mustang engines seem to cost almost what the new crate motors go for and the crate motor wasn't likely subjected to five minute long on the rev limiter burnouts like crashed Mustangs tend to be.