BigWalleye already indicated that you need the "V16B1-Patch-kit" to install the "Stiebler4B_V16B1_Revised". Stiebler himself has indicated that it is necessary.
In addition, you need the "MFM-Lite-Beta-v4" and then install "MFM-Interim-Beta_NYGM". But, remember that the "MFM-Lite-Beta-v4" and "IABLShipsforNYGM_New2" are not compatible.
And the problem with some ships of the "MFM-Lite-Beta-v4" is that when you find a convoy some ships are on the ocean (with the propellers in the air and therefore does not move). It rarely happens.
1. The "MFM-Lite-Beta-v4" you can download it from here:
http://www.mediafire.com/folder/sadc...M-Lite-Beta-v4
2. The "V16B1-Patch-kit" you can download it from here:
http://www.mediafire.com/folder/ydh5...16B1-Patch-Kit
Or in its corresponding section:
http://www.subsim.com/radioroom/showthread.php?t=174225
Long live to the NYGM.