i have a 05 3500 drw with 4-10s.i tow artic fox 32-5 with is 36 footer,dry 14200.16500 max,just cooked the rowtors.so i need to stop better or trade 5er for lighter 5er.truck is a auto and stock,so do i put a exhuast brake on? what one will work with 05,and do i need to beef up the trans.