Underrated JDM Engine Swaps That Shine on the Track

Been digging into some lesser-known JDM engine swaps lately, and I’m curious what’s your favorite underrated setup that actually delivers on track? We all know the usual suspects (K20, 2JZ, etc.), but I’ve heard whispers about the F20C from the S2000 doing wonders in lighter chassis like the EG Civic. Anyone tried that or something similar?

And for fun what’s the sketchiest swap you’ve seen somehow work? I once watched a dude cram a 4AGE into a Kei truck and somehow run laps without exploding. Love hearing these wild stories!