I'm in a bit of a predicament guys...I've become bored with my GT. I was riding through the dealership here a few days ago and spotted a nice new Mach. "Trade Up" was the first thing that came to mind, but I decided I don't need to increase my monthly payments. So, I started thinking about an older Cobra, 98 in paticular, the newest of the rounder body style. What's the real difference between a new Mach and the 98 Cobra? They have practically identical drivetrains, and performance should be very similar between the two. Only real difference to me is that I could probably even trade my GT for a 98 Cobra. My GT is a 2003, dark shadow grey, all stock except for the UPR o/r X pipe(still have stocker to swap back on), 19K miles, Mach 1000, leather, all that B.S., wouldn't you think I could swap it for a clean, somewhat low miles, 98 or so Cobra? Not to mention the cobra will hold value better, I've got a feeling the 99-04's are about to plummet as far as value is concerned.
Before anyone suggests a bolt-on bonanza for the GT, I'll go ahead and say NO.
Before anyone suggests a bolt-on bonanza for the GT, I'll go ahead and say NO.

I'll explain it for you, he was adding up PROS and CONS of both. Both cars make similar numbers on the track and he was just throwing in little differences to set them apart. It's not like he was saying that gas is the reason to buy a GT. 
I'd take one over a GT regardless of the year, any day of the week. I'm a little bias though, since I always liked the look of the pre-99 SN95's better anyway. Of course.....it wouldn't remain stock for long either. I just think the DOHC is just such a sweetheart of an engine, that the exhaust note alone is worth the trade for me. 
Some how you spent $600 and have nearly 100RWHP less than when it was stock, guess you went for the torque gaining mods huh