98 gmc sierra 6.0 swap

[98Gen3]

Im putting a L96 6L in my truck. Came out of a 09, using my 4L60 trans with spacer kit. Few things im wondering about is this.. the harness i have and computer is from a 01 chevy. The knock sensor harness is different. Can i re wire this to just plug into the sensors on the side seeing how 01 is under the intake... dumb question but i havent seen a post like this lol. . Any input is helpfull. Also, what type of headers i should use so there isnt any issues. Dont want any steering shaft problems hitting them and so on. It is a 4x4 also. Thank you