Outer Limits 4x4 Board

hi, i have a gu with a 5" lift....wanted to know whats best to correct rear pinion angle...upper or lower arms?i run 35"pro comps,will they rub on the rear guards with the longer lower arms. also whats the go with the brake proportioning bracket? has anyone made their own?
cheers

commonly used are heavy duty extra length lower arms (16mm longer) and heavy duty adjustable upper arms
I haven't heard for tyres scrubbing on the rear,
ease to make your own brake proportioning valve bracket