MSD 6AL Question?

[TN Shelby Cobra]

Thanks for the info guys! I took the Cobra out last week and drove it about 30 miles to a friends house. It was a hot day.Took my friend for a drive after letting it set about 25 minutes. Got on it and it started missing. Took it back to his house and it was running bad and back fring thru the carb. The car started running pretty lean. ( Light grey inside pipes) It doesn't normally run that lean. Went and got my trailer and brought it home . I first thought it might be bad fuel so I changed the fuel filter and drained the tank. Checked the fuel pump ( black inline electric) It is working fine. I changed the carb. ( I was going to do it anyway ) Still don't run. I changed the coil and no difference. (The car has a 392 Ford crate motor ) Car has 7,100 miles on it and I put 1,700 on it since I bought it 4 months ago.The only thing left to change is the MSD box or the MSD billet dist. My box is mounted in the passenger area aboue where you feet are. Its funny cause I took it up to about 6,000 RPM and thats when it started missing like it is suppose to do. ( 6,000 chip is installed) I also pulled the valve covers and everything is fine. I worked on this thing all day yesterday and didn't get no where!!! The past owner gave me all the paper work and the box was been replaced before. ( Car was built in 2004 ) Dwight it is good hearing from you. I have been going to the sonic cruise inn every monday evening. I didn't see you there and figured the heat had got to you from all day at VW!!! I'll let you know when we all get together again down here. Thanks again for all the info everybody. Mark