Deep Dive: Getting intimate with the 2010 Honda CR-Z's powertrain
I took my Honda CRZ Hybrid, ripped the oversized battery out and dropped a k24A2 with a 2011 Civic SI LSD trans. Needless to say the car is a lot better now :
2013 Honda CR-Z Hybrid Coupe: More Power, New Battery, Updated Style
Replacenment Hybrid Batteries From Rockauto? | Honda CR-Z Hybrid Car Forums