C5 gear and stall converter recommendations

Hi guys, I’ve been researching and reading a lot about switching to a 3.42 gear and mew stall converter, maybe 2400-2800 rpm. Can anyone comment if this is a good investment? Feel free to make suggestions or pros and cons.

I have an ‘02 auto. Also, where would you recommend for ordering these parts in Canada? What would approximate costs be? And what brands would you suggest for the TC?

Thanks so much!