Need help with wheels

[centralchevyman]

Im new here but was wondering if i could get some help with some wheels. Ive been working on a 71 for a few years that is finally about done but was wondering about what wheel size would fit it. i looked at some other builds going on but didnt know if they were the same setup as mine. My truck has air bags with a c-notch in the rear and a setup in the front like 69chevyshort"s has. The front inner fenders are not stock ones but i guess u would call them homemade that will fit a 30" tire in them. It is a 5 lug 5x5 bolt pattern i think with disc brakes front and back. I was wanting 20"s all around but also saw some people were doing 18"s in front 20"s in rear. Would i have a problem with 20"s in the front rubbing the fenders when i turn. Also how wide in the back can i go with out tubbing it. i was looking at coys wheels cause of price unless someone has any ideas. Everyone that has coys has polished has anyone got chrome or is there a reason. I would really appreciated your guys help.


Thanks in advance


Jon