prob a stupid question

.............Yes there is differences, from year to year, hd to ld.......motor to motor.......what year is ur trannys and vehicals, they can still work back and forth with alittle modifications......kim.......
not sure what year the trans in the car is but the motor home trans is a 77.they are both on a 440. im just wanting to change the valve bodys out not the whole trans.