I know the CK shift kit is supposed to be the best but with servo is $100 more. I was plan on getting the CK base convertor and bottom feed filter set up. Also getting the Transgo hardened pump rings with stiffer spring and hardened stator. I have to do those seals anyways. Also need to do the selector shaft seal, never done one. Also getting a new TV cable. If the CK kit is much better, I will go that route. I ran the old Transgo kit, didn't shift really firm till I added a billet servo. Are there many changes? Doing my 424 Olds sb stroker, hoping to get at least a year out of this trans. Thanks in advance.