Flaming River Manual Steering Box

I have the Flaming River box on my 68 340 Barracuda. With a 13" steering wheel it was very difficult to turn. I've switched to a 15" steering wheel for more leverage and it's not bad. I don't know the diameter of the Tuff wheel but I wouldn't go less than 15" dia. However, I'm old enough to remember cars with no power steering and you have to drive them as such. You can't expect to turn the wheel with one hand while standing still in a parking lot. It's all in what you like and I like to feel connected to the road and have little or no slop. This gives me that. It's also a quicker ratio than stock so it's 2 turns lock to lock.