Would having a 454 hooked to a automatic and 208 T/C with all stock running gear be ok. I know that a 6" lift changes the drive shaft angles and I don't want to be breaking anything. the 454 has a mild build. it not an all out race motor, just a strong street torqe monster. I will run 35" tires also. If I do the 6" inch springs, front and rear, will I have to zero rate the springs.