95 cobra stock pulley sizes?

here a picture of a stock GT pully it measures 6 7/8 in. across.if it will work i have the whole set (alt,waterpump and crank)off a 95 GT i'll sell...

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I have the gt crank pulley on my cobra with a kb. As noted above the cobra = 5.85", the gt about 6 7/8". I changed to the gt after putting the kb on. It increased the boost level without going to the smaller kb pulley. I originally tried a smaller kb pulley but had too much belt slippage. What are you trying to do and it would seem either pulley would work, though the larger crank pulley will increase boost levels by spinning the sc faster. The larger pulley also turns the the waterpump and alternator slower; but I haven't seen any problems.