This is correct and current. In addition, see more detailed brochures attached. We keep these turbines and heat exchangers in stock most of the time, and yes, they replace 203720 and 203430 series turbines, regardless of Aircraft Serial number.
Also attached E2H ECS upgrade information, which is a more extensive retrofit up to a C-130H ECS System. More reliable, 230% more air flow, better pressurization, but also more expensive.
C130_Pre_1974_ECS_Upgrade_Fact_Sheet.pdf
C130 E2H ECS Upgrade fact sheet.pdf