Go for NGK Platinum spark plugs "NGK Platinum bpr5egp"
put rspec or ultima low resistance wires .
and if some increase in economy is not a problem for u then also put simota Carby air intake ur car would be hell fast and smooth and u will luv it...
cost
NGK Platinum bpr5egp rs 1200 [3 plugs]
rspec or ultima spark plug wires [rs 1800 for 4 wires]
simota carby air intake rs 3000
contact Jz he will send it to you leapord courier if jz wants he will ship it for free. just contact him and do note that if u use of only "NGK Platinum bpr5egp" and rspec plug wires ur economy and performance would significantly increase.