Engine Swap (I-4 with Mods vs. V-6) & Vigor I-5
I would like to bring up the advantage and disadvantage of replacing your I-4 with a V6 versus an I-4 with Turbo/Supercharge, major exhaust Upgrade, and any other simple bolt-on Mods. I believe someone once brought up that Vtec has a lower pwr. band But as part of a reasonably priced Upgrade project this may be possible even on non Vtec engines.
I also want to point out the largely forgotten I-5 from the Vigor. I don't know if this is Compatible with any other car, i.e. Is it able to be placed in another car. It's not exactly renowned for Perfomance but it may be a forgotten way to tap power from an unusual source. I-5's are making a comeback (most notably in Gmc trucks,) who also copied another Honda innovation, Four wheel steer.