When building a driveshaft are there enough splines in a stock shaft to accomodate a 6" lift from full compression to full droop. The reason I ask is that I'm getting ready to swap everything from trans to axles (from th350,203,12b,10b to th400,205,14bff,d60). This is my daily driver and I will only have 4 days to perform the swap. I'm trying to determine the length of the shafts I will need beforehand. Does anyone have this combo that could give me some input? I would like to have the shafts built to accomodate the lift even though I am stock now.