68 chevy large wheel help..

[bguild]

I am thinking of getting these wheels mainly cause I am doing thier website and I can get them with probably a trade or cheaper than normal.

The sizes I am looking at is 20x8.5 5x5 bolt offset+12 backspace5.22

My question is will this offset / backspace work with our trucks and do you think the wheels will tuck under the fenders if I get an airride set up.

They do make these in 22 as well and I was thinking of possibly doing a 20/22 set up but never have seen that done so I figure better probably be safe and do 20's all the way around..

Let me know what you think. Thanks in advance.