Forgive me, I've been of the loop for awhile. My last mustang, a '90 5.0, had all the goodies. It responded very well to modifications as they all did during during that time. Now I own a '95 gt and am gearing up to do the same. My concern is that I'm finding that there are some significant differences between the EEC on the '87-'93 stangs and the '94, '95s that can compicate tuning and modifications. My understanding is that the programing adjusts the timing based on different factors and load conditions and even retards the timing to limit torque during shifts. I've read that even simple mods like bigger mass air and throttle bodies can even have adverse effects. I'm faced with replacing a motor and I wanted to do it right, new intake, alum. heads, fuel system, exhaust, everything. I'm more than a little discouraged now. What's the honest scoop?? Is there a way around the problems? A different computer('93 for example, or a '94-'95 cobra)? Or is the problem I'm reading of just hype? The aftermarket continues to sell parts for these cars so I imagine there is a trick... Thanks in advance for the advice/info