GM A Body Wheel Size

[RPM]

Hey all,

I'm the new guy....

I have a 71 Olds that Im looking to put some larger rims and tires under. I have 15" welds on it now with 325/50/15's M/T Drag Radials on the rear. What wheel tire combo looks good on the GM A body cars? I was thinking of going to 18's with the 345/40/18 M/T drag radials. I have a Procharged 434 small block olds in the car so I need a good rear tire.

Pics of cars would be nice as well.....

Thanks....