Plugs - NGK or Autolite?

Tom_5.0

New Member
Jun 6, 2019
9
0
1
UK
Morning all,

I am currently running NGK FR5 plugs but they don't run good at all. I want to put some Autolites in but what does everyone recommend?
AP104, Resistor 25, AP25 Platinum or APP104??

I have Holley Systemax heads and intake

Thanks,
 
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Thanks guys. I am in the UK so limited to what we can get here. Looks like a choice between Autolite 25 is the only copper plug available to me so i'll give those a go!