I swaped in a D16A into my DX hatchy that had a D15B7. Now the plugs in the D16A right now are the BKR6E-11 which have a short tip but the replacement D16Z6 ZFR5J-11 that i got have a long tip. Is the tip gonna have clearance issues with my piston? On NGK's website it says they have the same reach but the ZFR5J-11 look longer. Any ideas about this one?