My 1997 JDM car is currently fitted with NGK PFR6B plugs.
I have a new set of Bosch FR6KP33X+(+54).These are listed as being for new age vehicles,visibly they are both identical to each other.
So are the plugs different for classics & newage?
Any help will be v muchly apreesh!!!

 

personally would stick with NGK PRF6's or if its de-catted, etc. then PFR7's