In an article in issue #119 of YBM by John Mummert, in a competition engine build, he refers to new tool steel valve lifters by Trend Performance. However, he notes that the pushrod cup on them is 5/16" diameter, not Y-Blk std 3/8". No further particulars are given. So, presumably custom pushrods are required to fit them, but then what about the 3/8" ball at the rocker arm end? Are these lifters going to be marketed as replacements? If so, it doesn't seem like a very viable situation. A person could write to YBM, and possiby get an answer, but it would be months away. Anyone here know any particulars?

Paul