Transmission line routing into old radiator

[SnS C10]

I have the old radiator from my 292 straight 6. It has the trans cooler ports on the bottom. Which line from the trans goes to each port? This is a th350 trans

[LUCKIN-FOU]

SnS C10 if all you are running is the cooler in the radiator it won't matter which way you run the lines. If you plan on running an external cooler on the truck you go from the bottom fitting on the transmission [were the lines go ] to the cooler then into the radiator back into the transmission. the bottom line is the exit for the fluid. Running the lines this way will allow the cooler to work. you need to know the external cooler works best when air is going through it if you get into traffic then the stock cooler will help cool it also.