Porterbult Extreme Rear end Bed Floor

[Longhornss]

Ok guys I am running A PB Fab extreme drop in the back of my 67 long box how much will I have to how much will I have to raise a wood bed floor to clear the yoke and drive shaft. I am fully prepared to notch the cross rails to give me .75"-1" clearance between the wood and rearend components. and am planning on a "Speed Bump" over the Bridge.

I know there is not going to be one answer here just curious to know where other people have gone before.