ht leads

[leewxm]

i bought some bosch spark plugs off a mate (£5 bargain). i wanna get some ht leads next, then fit the lot in the next few weeks. all i wanna know is,what size should i buy? they around the £80 mark for magnecor...but in 2 sizes....8mm & 8.5mm. are ngk plugs better than bosch?

 

[ShanerBmth]

The 8mm will be fine (i have these on my 172 and they are better then standard Renault leads). Go for the 8.5mm if you have a lot of engine mods. The NGK plugs are probably better (i also use these) and they are good plugs.