I have the Pro Armor Circle Force steering wheel with their adapter. The stock wheel measures 4 3/8" high when sitting on a flat surface. The Pro Armor measures 4" from the back of the adapter to the outside of the wheel.
There is no noticeable difference that I can tell between the steering wheels as far as distance to driver. There is a huge difference in feel and looks!
Just measured the back spacing on the stock wheel, it is about 3/8". As near as I can tell on the installed Pro Armor adapter, it has about 1/2" back space.
That would put the Pro Armor wheel about 1/4" further from the driver. Not enough to notice.