Ranger throwing code and I'm pulling my hair out

I bought a 96 Ranger 4x4 AT and I knew going in it would need some work. The Problem I'm having it's throwing 2 codes po443 and po756.On the 443 I have change all the sensors the only thing I haven't done is change the charcoal box and blown smoke down the EVAP lines. On the 756 I changed the Valve Body, filter and fluid and still throwing the same codes. The only thing left I can think of is the Computer.Can someone Please steer me in the right direction Thanks Fordclevor: confused:

..You didn't mention it but is it the 4.0l motor that's in your signature?