Did a little more research. Your pump is the 555, the display version is the 557.
I found this announcement and I also found that I have a parts manual for the 555/557 (the parts manual shows every part for both pumps). Both of these pumps use the special Bowser computer (not made by V/R). For those of you who are new, back when Wayne invented the computer and licensed the patent to V/R to make them, others tried to invent a similar computer. Both Bowser and Milwaukee made similar computers but they were not made by V/R. Wayne just waited until a station in Ft. Wayne purchased one of them, then sued for patent infringement, Wayne won both cases, so these computers were only used by each of the companies for one year. In this case, Bowser used the computer in the 555, 557 & 560 only.
Take a look at the pictures below, you will see where the computer holes are different.