LOL Looks like you've been keeping up with the turbo thread Dave.
That's why I got the turbo guy involved. Reed started with the B4Black cars and has knowledge that none of us have. So far with the newly re-designed turbo it's basically a stage 2 upgrade for the 86-87 design. Now with that fact it can be upgraded to a draw through version of the TA 49.
The newly discovered thing is that there are 2 more upgrades that can be done beyond that. Using a TO4B 60-1 compressor moves more air and then you have the GT35 61.5 mm wheel which will move even more. This makes it very possible for a B4black car to make it into the 10's if everything works out and it's tuned right.
Now I just have to hone my tuning skills a little more.