I have a 2003 f150 and it will only go in reverse. It started with water in my radiator mixed with transmission fluid I kept filling the transmission because I could not spot a leak. Eventually it would only go in reverse. I'm pulling the transmission out now but what other parts that I am most likely going to have to replace?

 

Probably the torque converter and the radiator.

 

I recently came across the Dieselino website (https://dieselino.com/) and I'm considering purchasing some parts from there. Has anyone had experience buying from this site?