I have a 96 psd and I stumbled across an 01 t444e in awesome shape for the right price I want to swap it into my obs but i don't know what I will have to change upgrade etc.

 

There is some differences. There is a thread in the 99-03 forum going the other way right now. Without swing the motor I'm pretty sure you will have to change the accessory mounts, injectors, and switch to e-fuel. I'm not sure about the exhaust manifolds. Up-pipes and turbo should be ok though. I would think everything else will work

 

And the oil pan is different. If yours has some rust it would've a good time to replace it

 

See I read somewhere that the t444e kept manual fuel with a single shot injector.

 

Like I said. Without seeing I can't be sure.