Im curious, is 54 scfh @ 54watts what the pump is pulling while connected to the 2 skimmer bodies?
also, there are a couple versions of the "old style" otp 3000, do you know if yours is one of the older more powerful version, or the newer , less powerful version... then theres the "new" version with the larger pump outlet and the newer venturi...considering it's cost, it might be cool to mesh and try on your skimmer(s).
The wattage / scfh numbers you quoted are while the pump is connected to both skimmer bodies, just as in the photos. For the record, my Dwyer only goes to 50, so 54 is my guesstimate based on how hard the ball is pegged and the amount of movement, if any. I will recheck using both the Dwyer and the Kill-A-Watt this weekend to see if anything has changed.
As far as which pump version, I honestly don't know. I can tell you the pump was purchased from SWC (saltwaterconnection) along with the original (1st) body in March or April of 2008. The input piping is the metric equivilent of 1.25" at the volute and the output pipe is the metric equivalent of 3/4", if that helps...