Or you can build it up NA and then add FI and make more tweaks from the NA config to help support the FI too. Don't have to put FI on an engine that just has bolt-ons.
Yeah of course you could do both, was just comparing the two. Most of the 3.7 owners will never upgrade the 3.7 internals anyways, makes more sense to upgrade to the 5.0 platform if cost is a concern.
I just saw your exhaust setup in your sig, you gotta be cruising around with Mustang earmuffs on with all that ear bleeding fun!