ei8ball

Hello. I am getting another shift indicator (and whole shift assembly) on Tuesday from a parts yard here in Columbus. My question is, how hard is it to replace the shift indicator part or should I just replace the whole shifter? If anyone has done this in the past or knows of someplace where I can get some information, it would be greatly appreciated. I have the Haynes manual but I didn't see any information on the indicator.

Thanks,
Doug