what do i need to swap my 305 vortec with a 350 vortec in my 98 chevy silverado?

[mikepickerings10]

98 silverado with 305 vortec and 4l60e what needs to be done to swap in the 350 computer ? bellhousing? motor mounts?.......

 

[chevypride0310]

computer for the new engine, the motor mounts should be the same and the bell housing should also be the same since its the same transmission and if im not wrong about this a 305 and 350 is the same block on the outside so the bell housing bolt pattern and all should be the same