A65 1968 rocker arms.

[thunderboltandlightfoot]

Hi I have an A65 1968 Thunderbolt build in progress and have a question,the rocker arms are numbered so --
inlet left 68-148   inlet right 68-150
  ex left 68-152    ex right 68-154 -----is this sequence correct ?
On looking on a well known site the rocker arm  68-154 is labelled as an inlet rocker so i am a bit confused as to what I have,  the Draganfly site for the year has different numbers so again confused help very much appreciated
                                          Thanks.