I will have to go and look up the part #s you have -- are you changing the cam ? do you also have the spring compressor ? how are you going to check the installed hight spring pressure ? once you have the installed spring height measured, you need a rimac or a spring pressure gague ? have you the ability to do this, i am guessing the spring change is whats called a drop in will work with almost all stock or near stock combos and what you are trying to do is just check the seat pressure so as not to have to much or to little ?? if so i can help i have a race shop around most of the time except sunday going to e town with super gas car shop # in stanhope 973 347 7070