Small Block Pushrods 5/16 Ball and Cup

Some manufactures do it end to end (overall length). Others like Manton and Smith Brothers like the effective length (usable length) but will do it either way. Oe pushrods lists the push rods by overall length.
Comp does it by overall length. I am not sure of how Trend likes to measure their pushrods. The Proform pushrods were overall length if my memory still works. There are so many pushrod companies Melling use to list them by effective length. When I measure overall length I take that length and subtract .155 or .156 that usually gets you close to the effective length.