OK folks. While I really appreciate all the help this forum provides, this is one of those times that each post gets me more and more confused.
The very first post of this thread contains the mod, as explained by Invader. The diagram I posted above is an exact replica of that first post (photo #3). My plan was to do exactly as Invader and the diagram described.
But after reading 11 pages of posts in this thread, it seemed that there may have been a change of heart - a more simpler way of doing it. MoFlow confirmed this by linking HERE
So I just completed the mod as described in the photo (also by invader) in the link above, NOT like the diagram I posted. That "NEW" way of doing it doesn't tie the two bodies together, then link it into the IAP line with a second T connector. It simply puts a line between IAP port on the left body, and the sync port on the right body - and with a T connector - ties that to the stock IAP hose.
The way I understand it is:
Version #1: tie both bodies together with line and T connector. Splice T connector into IAP line (both ends of the IAP line remain where they are from factory. Tie both T connectors together with line.
Version #2: Tie IAP port (on left body) to right body with line and T connector. Tie stock IAP line into empty side of T connector. No cutting the IAP line (gray). Don't remove rubber cap from left body.
Sound right? I went with the Version #2, based on the latest post from MoFlow about it. Is there a reason I should go back to Version #1, which is the way Invader originally posted it???