I just searched your old posts..
Instead of trying to make your car match the camshaft by changing the converter/transmission and gears,
Why don't you make the camshaft in the engine match the car.?
Change the camshaft to a Comp 265DEH-10 12-208-2
or a Isky 201264/271-12
Either , is a much better match to the car and mild converter and 3.23 gears and how you like to drive it.
The right solution at a fraction of the price too.
The car will fell like a whole different deal.
Do you still have those sad 882 cylinder heads on this motor?