I don't have an A-trim but here are my gains from adding a 7" crank pulley to my 6lb Powerdyne. The stock crank pulley is 6.5". I was unable to run up to 6000rpm due to spark blowout but you can see the hp/tq gains throughout the rpm range. http://www.msnusers.com/MustangMembe...hoto&PhotoID=6
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2003 Redfire Cobra #5978 of 8394
-Pro-5.0
-DC cai
-Steeda x-pipe w/cats
-Steeda cat-back
-Lightning pulley w/Afterburner
441rwhp/434rwtq SAE
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