How big of a tre can I get on stock rims with 3 in torsion lift

[door man]

I have a 97 all stock now . .lift kit is on the way and I am trying to get some feed back on how big I can go . .this isn't my first lifted truck just my 1st expedition
what mods do I need to fit 33s 35s
wheel spacers?
Different rims?
currently has stock 16in rims