NSB 90 x2 1/0 ground for each NSB 1/0 lead to alt make custom battery box x2 2 NSB 90 and some 1/0.... empty battery box battery box..... but I only need 4in of it The tray bolted in finished with 1/0 ground, 1/0 power lead to ault and 1/0 run of ground to back NSB 90 OEM 1/0? Back NSB 90 You would think it was made to come together... I still have to tie in the back battery... I will do it tomorrow..