I do have a pulley puller...but it is originally for the Eaton M90 in the GM L67 (Grand Prix/Regal). I've used it on them a few times, but never on a cobra yet.
In talking with Terry at South Florida Pulley, he told me that the only modification necessary to this pulley tool to make it work for a cobra would be cut off about 1/2 to 3/4 of an inch from the bottom of the backing plate to clear the intercooler lines.
I have not yet done this as saddly I do not have the tools that could complete this in less than a 1/2 hour.
If you have a means to get it sawed down, and are willing to try on your car I can get it to you this weekend, anytime after 3'ish Friday.
Of course if anyone has the tool for the job I'd say that would be the best bet...but if there are no other offers, let me know.
-Josh