it depends if you need to change your hi-tension wires. if your wires are already brittle and cracked, change them... also if some electrcity jumps out of the wires (sa gabi mo tignan, buksan mo hood, paandarin mo makina, pag may nakita kang kuryente na tumatalon galing sa wires, sira na yun) change them.

if you're planning to change them, go for the OEM. Mine is NGK (the blue one). im not sure with the sizes though, just bring your sample when you buy one.

hope this helps