Wheels and tire size for lowered 67 camaro?
 

I lowered my front 2" with drop springs and also 2" with drop spindles. The back is lowered 2" with hotchkis leaf springs and another 1" block. Been looking for tires and wheels but need help with size and backspacing etc. Would like 18's or 19's in back and 18's up front with as big a tire as can fit. Any help would be great...

stock frame and is it mini tub?

Stock frame and no mini tub

I would take it to a shop and have them measure. With these old cars they all sit differently. Depending on if your tank is full, stereo in trunk, what engine you have, etc will depend on how low your car actually is.