All 200-4R Converters have a 27-Spline Turbine.
Early 700-R4's up to late 84 had 27-Spline Input Shaft, after that, 85, they switched to 30-Spline.
So if your 700-R4 has a 27-Spline Input Shaft it will work.
Example Pic >> 700R4 Transmission Parts Torque converters
Converter Parts >> Torque Converters Explained - TCIŽ Auto