spark plugs

I took my raptor to Fastlane in Houston to get the phase 2 Roush phase2 SC installed. I asked them to change the spark plugs with the install. They were not very polite. Not very good customer service , charged me $1000 to change them, long story short when I got the truck back it wasnt running...

Hey everyone, so I just changed out the plugs in my truck. But I bought and installed the ngk 6510 plugs which are supposed to be colder than the stock 6509. Didn't realize they're mostly for modded engines. My truck isn't supercharged or tuned, it's completely stock. Will I have any issues...