I usually break at least one of the wires getting them off.
Its always good to have a fresh set of plugs to break in the cam with. $12 insurance.
And Air filters are always good to replace.
I just replaced all of them not too long ago. I think I'm going to risk it and leave them be. Also, why would I need new injector o-rings? I didn't think I needed to remove the injectors to put in the cam?
1998 GTP Sedan: Gen III, Speedy Daddy Headers, SLP Catback, Magnaflow High Flow Cat, Open Cone Intake, Autolite 104s, Debadged, more to come!