Originally Posted by "Z"en

1.The stock Stillen kit is friendly to our auto
2.Longevity of the tranny depends mostly on your driving style
3.I'd not suggest having over 400wtq in ft-lbs if your primary concern is its longevity.
4.Line pressure can be adjusted by tuner by few extent in order to make it shifts more smoothly (but it has limits. it will fail if you go overboard)
5.Take it easy for the 5-7th gears
6.Don't trust so-called performance rebuilds

Just my two cents (a man who has blown it four times since it was boosted).