Incorrect! You will be using your stock springs, but you will need new perches. Since the 49 is an axle over spring setup, the blocks will work to lower it. The Task Force trucks are axle under spring, so using blocks will actually lift the truck.
Si i need to get new pearches and move them on the bottom if i want to use 59 houseings?? can i just gut my 49 housing and put all the guts axles and all in it??