What stall speed do I need

I have an off the shelf TCI rated at 3200, a 10". My first setup was 4.30s with 29" tall m/t, I now run 3.55s with 26" tall drag radials, with both set ups and the big TQ of the stroker it's tire smouldering at its finest. Like mentioned before it probably flashes higher then rated with the 558tq. I don't look at my tach much so I couldn't say for sure. I just drive on the street, so it's plenty loose enough.

And here's the usual warning, DONT buy anything from TCI. My street fighter 727 and the converter were both hooped from the get go. I think I had 8 miles on them before they both got rebuilt, talk about top quality stuff. I missed all the warnings 3.5 yrs ago when I bought.