Guys I'm building a B20vtec putting it in a SR3 honda civic It was automatic now its manual with the B20 motor in and a Spitronics managment system still waiting for the b16a vtec Head to come out from engineers. What exhaust do I put on? And for that head on the B20 block what head gasket? And timing belt do I use?can I re use the b20b head Bolts on the b16 head? Need help please guys..