I know the driveshaft flange size changed in 90' I think , did the length of the shaft get longer as well? I also heard somewhere the the wheel base changed in 90' as well, is that true? Because I got a driveshaft from the local boneyard here, they said it was a 91' shaft, but clearly the flange was a different size, but LMS made it fit. So my question is are they different???