Ive got a B20B with a B18A head with delta 272 cams, intake, header, exhaust tuned on a S300. Im about to change my spark plugs the ones Ive been using the stock NGK plug for the B18A (Cant remember the number)and they tend to foul out within a couple months, I was wondering what you guys suggest running in it? Thanks

 

Just get another set of NGK's. And I would try to get NGK iridium or platinum plugs. The only thing about these plugs is how long they tend to last.