I really don't care for a thinner spare, but I might have to go that way if the cover doesn't work. It is a 5 on 4 1.2 pattern I had the axles re-drilled and scarebird fronts done up to 45 on 4 1/2 instead of re-drilling to 5 on 4. It going in a /6 so I'm not too worried about the rear axle re-drill.