I have AC Delco Rapidfire's in mine, and my Blazer loves them, It Had Bosch Platinum plugs in it when I bought her and they were only apparently about 6 months old at the time but the idle was really rough and it ran a little rich. so I recommend AC Delco plugs all the way!

 

Hay guys it seems like everyone on here hates Bosch plugs??? I have to say I have use them for years on many vehicle's & not 1 problem I will say that win I bought my 98 Blazer new 1 year later 2 plugs went bad I didn't go back to A/C I put on Bosch platinum's & I'm on my 3 pair at 150,000 & love them good power, response & good mpg. but that's just my experience

 

My local auto parts doesnt carry A/C delco double plantnum plugs, Where can i find these specific plugs at?? If anyone can direct link me, it would really help. THNX