Does anyone know how hard it is to changed to a GT dash in an xb, do i need to change the speedo sender as the gt reads higher, and fuel sender ect?

The dash change will be pretty much plug and play.
You will just possibly need to add the wiring for the oil pressure guage or swap the light wore accross to the guage input.
The speed sensr will be fine. It will be a cable operated speedo in an XB anyway.

yea sweet, i was expecting to have to change the oil presure switch to a sender as it already has a low oil presure light, i just wasnt sure if a tacho wire would be there, and wether or not the GT had a diferent gearbox or diff ratio?? But even still it shouldnt be too hard, will see how i go when i manage to get my hands on one lol