Here is a link concerning the new SM lifters.

http://www.aspenrt.com/forum/viewtopic.php?f=24&t=396

The quality of the ones Ive gotten has been dead on and ive had them right to 7k and so far so good. And they are on there second cam as well.

I got the kcid put to me by Joe as the few last sets I got from him were not even usable, the cups were machined different???? One lifter body was split from the box. JS...sucks.