I use The Stock Stands , and Stock Shafts , aluminum Spacers along with an Old Pro Stock engineering End stand Kit , its seen 7200 ( usuall6600 or less ) and 20 + years , the end support is the critical area , I run 135lb on the seat and 375 or so open ( Crane Solid Cam deal ) if it was a Roller setup Id use a Stronger system every where , but what I have has been fine