The Phoenix will work fine with your truck, and if you get a gryphon CS you will be able to fairly quickly switch between tunes. I cant say anything about the SCT because I have never seen one, let alone played with one
. The reason why the phoenix is aimed at diesel trucks is because they have more tuning options, we get 2 per octane level.. they have like 15 options
, so the phoenix wouldnt be fully used with your truck unless you want a lot of similar tunes. The other benefit of the Gryphon is the display that is always there.
Its up to you, but all the tunes will be the same
. hope I helped