Converter upgrade worth it?

I started the snowball rolling on my GTX when I decided to change the shifter pivot seal. From there it blossomed into an entire rebuild, and I had a new TCI Streetfighter converter on hand, so I threw it in there in place of the original stock unit. Woke up the whole car, and the neighborhood, with much increased off the line and midrange performance. It was not spec’d for the motor in any way, I just bought it at an auction for $20 so I thought I would try it. Glad I did!