I am getting ready to drop the ZF back in and am wondering about my drive shaft lengths. I am using the BC Bronco cross member on the ZF Dana 20 set up. Roughly what will my front and rear drive shaft lengths be? I am also thinking of adding zero rates in the back to move my rear axle back an inch if its worth it. I am getting used to doing things twice since I just bought these drive shafts last year new.