[Topless Stang]

I have a simple question. I have an 06 V6 vert and have been looking at power adders extensively. Before anyone says 'use search' my question isn't about which one should I get, or which is better. I would like to know which is more economical....installing a power adder(either s/c or single turbo) or an engine swap to a 4.6L or 5.4L. I also would like all extras to be taken into consideration(cams, heads, etc for doing F/I safely & traanny work, engine mounts, etc for engine swap)