Factory Torque conv. Vs 2500 Stall conv

Been educating myself on auto transmission performance and function and had a couple questions after reading my Shop manual and stall converter posts and ads.:
1. Does a stall converter directly replace the factory torque converter?
2. In terms of actual driving/response, what difference would i see/feel between factory 727 and one with a 2500 stall in a 383 with just a 4 barrel and aluminum intake? Thanks
Author: Bayoulee