I think the TF-2 kit makes reference to using the rear servo spring in the front if u don’t have 2 in the front. But I think is only for 727s. I don’t like to use a 5.0 lever with a -2 kit. 3.8 or 4.2 is my choice. I have done lots of shift kits. If u end up not using the 727 rear spring I could use it. Kim