Car should still be fine even though coolant and transmission were not flushed. Nissan/Infiniti doesn't call for any of those major services being done until 105k so if you have it now I recommend you do those things for it's second round at it!!
Coolant, transmission, rear differential, and plugs... No wires should be needed!! This baby should be driving like new after you do those things!!!
If you want to confirm maintenance schedule check your manual... It's not a requirement on any of the major scheduled services, 30k 60k or 90k!! Just required to "check" all of the above for regular city driving!!
