When I bought the current disc I called them and asked why their website didn't show any 10.95 discs. They said that any of their 11" discs are undersize to also fit a 10.95 Pressure plate. I ordered one and it fit. I suppose they may have changed them to reduce inventory.

I have this setup in a Street/Strip (mostly street) 440 ebody. There are no lightweight parts other than headers but there are also no options. So maybe 3600lbs? 4.30 gears, 275 drag radials (28" tall)and Caltracs. Absolutely no problem driving on street with alum flywheel. With a smaller engine or 3.23 gears a steel wheel would probably work better. Your experience may differ.