95 cobra and 95 GT motor dif.

The shortblock (pistons, rods, crank, block) is identical between the GT and Cobra for our years. The h/c/i as stated above are different. The throttle body is the same, as is the MAF (both calibrated for 19lb injectors) The Cobra computer translates the input from the MAF from a 19lb scale to a 24lb scale.

I believe the only difference in the pulleys is the water pump pulley - it's a bit smaller, so it'll spin the pump faster. I haven't heard that any of the other pulleys are any different.