looking at a500 and a518 parts breakdown on mopar parts giant. on a500 clutches and steels are same part numbers for front and rear of one section of the overdrive unit(not 904/727 part of trans) as they are for an a518. but an a518 shows 7 and 8 clutch/steel combo, where a500 shows 5 and 6 clutch/steel combo. i am sure that i am missing something minor but don't know what. thanks in advance.