Okay. So I now know that it would be better for me to upgrade the 5.4 but what parts would I need to do that? It is stock at the moment.
What parts would I need to upgrade the 4.6. It has a racing trans, 4.10 gears, cai, H-pipe (no cats) and flows. I also have a diablo predator for this.
I just want to see what would be cheaper. Not really concerned about the power gain compared to each.