A shorter belt won't work. Powerdyne places the belt tensioner on their blower bracket. Without the air conditioner pulley the belt won't tension properly, if at all.
I'll see if I can get a pic of mine to you. I still have the air, but I've had the belts off and on enough to know.
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'92 GT conv.
TFS heads, GT40, Powerdyne 9#, AOD, 3.73...
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