Computer in 88 Cutlass Supreme??

Aright, I have never swapped an engine before...and before I start to do too much research...I have a 307 in my cutlass with that Computer for the Carburator and stuff....if I was to put a '83 305 in there.. What do I have to do with the Computer stuff....will it affect anything??? How do I do this.....Please anyone send me as much info as possible!! Web Pages or anything!!! Thanks guys!