V50 Cam sensor Crank sensor

[Ronnie1]

Hello new here
I am replacing the head gasket in a one owner V50 207000 Motor never smoked. No puff of oil on start up or smelled of oil. I am thinking the rings are good. #1 and 2 cylinder at 130 psi 3 and 4 about 140 and 5 at 150. If I replace the cam and crank sensor while doing the job will it have any effect on the computer or will the car just run? Any thought on the starter would be helpful. Leave it or install rebuilt and from whom would I get it.
Thanks.