B16 ENGINE AND TRANSMISSION FOR SALE THINGS TO KNOW BEFORE YOU BUY

I've a 2001 awd CRV with the B20 engine. I love the car but would like it had much more electric power for each day driving. What is concerned when changing the stock head with the VTech head? Is there any sites/tutorials that go over this swap, also which head would I be in search of?Interior-to outer rotor radial clearancePump human body-to outer