I just got my dads 2004 f150 when he passed away suddenly I cant part with it and I want to get it up and running the transmission is bad base on what the mechanic told me and my dad did also I wanted to know if anyone could tell me what other transmission would fit this truck please and thank you in advance

 

To put in any transmission other than the model that's already in there will be very, very hard to do and very, very expensive.