I have heard the 99+ stuff is better, but that I'm not sure.
I run stock 94/94 stuff on mine with no issues.
In terms of GT/V6 front brakes, then yes, 99-04 10.8 front brakes are better than 94-98 GT/V6 10.8" front brakes.
But the Cobra/Bullitt/Mach 1 13" brakes are better than both of them.
I'm not paying 1 million dollars or whatever they want for Cobra brakes. 
Why does 50resto charge freaking 329??...plus...the price of lines. I don't care if they say "COBRA" or not. Nobody sees that while your driving.

