well we need to exclude most of the jdm motors from toyota because they are just not as prevalent over here like they hondas are. everyone has type r and b16 swaps not too many jdm mr2 guys out there. i specifically know a girl on here that has a jdm mr2 turbo swap in her usdm mr2 and it runs high 14s in stock form, not bad but i have seen integras and civic si's do the same all motor and close to stock with no turbo.

this debate can go either way and on and on, it really just comes down to what you feel comfortable working on, any motor will make power, it just depends on how you go about doing it