Wow, those look bad. What is your timing set at? It looks to me that you had a pre-ignition condition or your car was running lean. I live in North Richland Hills if you need any help with timing etc... What plugs and gap are you running?
i sold your dad or friend that cobra intake about a month ago don't you have a blue coupe with welds and a black hood.
its a 100 shot wet kit but the thing is haven't ran it on nos for while. and check the plugs 2 weeks ago and they looked normal.
I did not recognize the screen name, but we came to your house remember? Anyways, you are welcome to swing by sometime and we could check it out. The intake swap went well on his car and I put an Edelbrock on mine. Take care.