Would be very interested to receive any input as to what year mustangs received revisions to certain issues that were fairly common. Like for instance, from what I have gathered, the 2004 (and possibly 2003??) mustangs received additional threads in the cylinder heads for the blowout problem. And anything after 2000 received a revision for the intake manifold cracking issue. I also believe that Ford revised the timing chain tensioner after 2002. I would really appreciate hearing of any other issue related revisions/upgrades and their specific years implemented if anyone knows. Thanks.