I like to do as much of my own engine building as possible therefore TRW, Speed pro besides the weight and fat rings along with slotted skirt, press pin design are out of the question for me, if your in a pinch they fill the hole tho..
In the past i used Arias dont know if they are even in bizz anymore
my last build (433) got Auto Tech pistons from PK. pretty sweet units skinny rings slip fit pins drilled skirts
drilled skirts refers to area under oil rings TRW has a wide slot under ring better pistons have holes drilled here for oil migration and provide more skirt strength
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........... The More You Follow The Herd The Less You Can Be In The Lead ..........
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