THE DEFINITIVE GUIDE TO JDM HONDA REPLACEMENT ENGINE

I have a 2001 awd CRV Together with the B20 engine. I love the car but would like it had more power for every day driving. Precisely what is concerned when changing the inventory head With all the VTech head? Is there any web sites/tutorials that cover this swap, also which head would I be on the lookout for?Inner-to outer rotor radial clearancePum