tom, welcome to inliners int`. you have been racing to long not to know what the damage will be when those cast pistons let go. these guys really know their stuff as i have been gently told what they think of my ideas. nobody is more into keeping costs down than me but it`s more cost effective to put good parts together than the alternative. i, myself am going to buy the tlowe pistons for my build, partley because of the quality and the peace of mind. see you at the march meet where i`ll be stuck doing the clutch again.