Tom,
We just did another TeamTech install today (videotaped - should be edited, dubbed and available soon with your purchase of TeamTech belts...) and I took the opportunity to check out the seat while it was out of the car. It was a 2001 GTS. All our prior installs have been on Gen 2 coupes, as well. On ALL the Gen II seats we have seen, when you spread the 2 lower cushions apart (yes 2, I notice in the picture your seat is really showing 3 lower cushions), all you see is one row of stitching. The seat bottom leather piece(s) is ONE PIECE, just sewn down in the middle. I was hoping to be able to offer the 5 point through the seat bottom as an option for the Gen II folks, but it looks like the seat changed design from Gen I to Gen II, and cutting it would harm the seat cushion.
On another note, a current ACR owner sat in one of our cars and tested the 6 points - he could not believe the difference in how it held him firmly in the seat. He'll be trying to upgrade his ACR belts to TeamTech... As stated here before, the 5th point stock location is pretty worthless, and when you crank down on the shoulder straps, it actually pushes you down and forward in the seat starting the submarining process. (I am improperly equipped to comment on the comfort concerns noted above... properly equipped spouse confirms 6 point configuration is not uncomfortable) Go with the 6 points - it takes the seat out of the equation and helps you feel the car... Cannot emphasize this enough....