I wanted to post here that I have a new ATP actuator for sale. I have the little fitting as well
Fitting, Pressure Port, 90 degree, 1/8" NPT to 7/32" Barb Fitting : atpturbo.com
Also included is a decent length of hose that is linking the 2 together. It seems like it was a real tight fit on the barb fitting. But its fit!
Anyway I bought it to do the swap on my 91 300d but after removing the ALDA and replacing all my brittle leaking fuel return lines my car would fly! I had no actuator problems after all. Anyway the car is sold and longggg gone so I have these new parts just sitting around. Not sure if someone wanted them for say $70 including shipping. Lemme know if there is any interest. Thanks Joe