anybody had any experence with surface discharge plugs on a road car , i've just got a set for my v6 , retail cost for the public version is £50 each , but because i have freinds in high places i have now i my possesion a set out of a works honda (sorry for the swearing) touring car ,total cost to me £0.00 , they have only done one 20 min race and are as good as new , they are the full race version and as such are not listed on the NGK website but working out the codeing they are a colder running plug , i can't imagine this will cause any problems with these lean burn engines but if anyone knows different let me know soon before i bolt them in