<VV> Right fit for 61' 700 4dr corvair

[Jorge Flor]

Hello everyone, 

I'm new to corvairs and just got myself a 61' 700  4dr. 

It is now at the shop getting brks done and some carbs done. 

I want to move from stock wheels to bigger new custom wheels. 

Has anyone tried to fit 16"-17"? is 15" the biggest that i could fit? and what is the right offset? 

If you could give an specific wheel that you found i would appreciate the help. 

Most places i have tried say that it is gonna be hard to find me wheels 
because they are the 4 lug type and most don't carry these? 
One shop told me they had some 15"x6 wheels called PMX 501 that they could 
special order but they don't have a picture to show me and i can't find a picture online. Please help me!! and excuse my lack of knowledge!!