That is a bad idea IMHO.
How many examples do you want?
Superlift, Fabtech, Rancho, Rubicon Express and even the Black Diamond cruiser coilover kit was adjustable.
There are too many variables not to leave the adjustability.
a 40's frame is commonly tweaked. So even if you spend hours measuring and making sure that you are correct the axle may still be off a bit.
1/4" can make a huge diference..
besides, why not be able to adjust your pinion angle?
How many examples do you want?
Superlift, Fabtech, Rancho, Rubicon Express and even the Black Diamond cruiser coilover kit was adjustable.
There are too many variables not to leave the adjustability.
a 40's frame is commonly tweaked. So even if you spend hours measuring and making sure that you are correct the axle may still be off a bit.
1/4" can make a huge diference..
besides, why not be able to adjust your pinion angle?