Whats the P/N on them... some one should be
able to tell you if its a long valve head..
I dont have my books with me so I cant help
you there... I have 2 sets of econo W-2s at
home.. one set of each.. long valve and standard
and they have different stand heights... but with
the econo heads they have the cradle cut in the
stands for the shafts.. racing version is flat..
they did build a few versions of the race heads
that had different stand heights.. one version the
stands are basically dont there.. just flat and it
uses a tall alum stand.. then some use a short stand