A stock SOHC VTEC civic with a cam and a cam gear will not hang with a stcok SOHC VTEC civic with a 50 shot. The cam will only give 10 whp on the most generous dyno. He's just a salesman trying to make a buck. You would want to get the best camshaft for your car when you are not spraying. So whatever is best for an NA SOHVC VTEC is what is best for your car. You should get a little more hp with the cam than an NA car with the same cam would get.