22s and 24s on a new body chevy

I just sold my truck and I am starting a new project .I am buying a 99-00 chevy 1500 and I want to bag it and just lay frame on 22s in front and 24s in back.I wanted to know what offsets I would need to get for the front and back.The back isn't to big a deal because I can shorten the rearend.Any help would be appreciated.