Just for the hell of it, if you have the extra money why not go ahead and upgrade the cooling and charging systems? You can get a 3G alternator off of a 94-95 GT from Auto Zone for around $90. You'll never have a charging problem with this bad boy even with underdrives!
Also, if you still have the stock water pump it wouldn't hurt to get a high volume pump from Stewart for like $70.
That should take care of any problems the pullies might cause. But you should be fine as long as your cooling and charging systems are up to par now. If nothing else get the pullies, slap them on, and if you have problems put the stock ones back on until you do get a chance to upgrade.
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Gunning for 12's!
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