I will be putting fj60 axles with a soa lift in my 69 fj40. I would like to purchase the ruffstuff kit as it is on sale, but need to choose 0 degree or 10 degree caster plate. I plan on doing cut-n-turn to correct caster after pointing pinion up more. I assume I would need the 0 degree caster, but here to confirm. Can anyone give me some guidance?