In a message dated 2/5/2011 1:11:16 P.M. Eastern Standard Time,
kenwilfy@COMCAST.NET writes:

The  pistons have to go with the cylinders they were originally with.
That is  about all that is critical.  You should be able to mix and match
the  rest.

hey ken I have found it pays to keep the lifters matched to their   lobe,
they tend to wear in a certain pattern seeing as the do rotate.mixing them
can cause failure, push rods don't seem to matter as much. pistons and
clylinders  should also kept together as you stated .  later   mark dearing
salem import service salem  va