I have a 2000 Mustang GT with 147,000 miles and a manual tranny. Two days ago, my car began to sputter really bad unless over 2000 RPM. I figured it was condensation in my fuel lines because that has happened before. But today the CEL came on throwing a "cylinder 8 misfire" code. I had the same code a few months back, replaced the spark plugs no problem, but in the spark plug holes there was anti-freeze. I knew my intake must of had a crack, so I saw this coming. I just want to make sure I am not thinking of anything else besides the obvious (spark plugs, COPs, fuel filter, etc), I know all that. This just frustrates me because on my old Mustang, I had this same issue and spent over $400 trying to fix it, but i ended up selling it without ever finding a solution. I am just beginning to lose faith in Mustangs as good, stable cars. I love them, but it's hard to love something that doesn't love you back. Thanks guys!