Considering a 9" Floating Axle for Autocross/Track/Street- Advice?

[theastronaut]

I've been looking into using a 9" floater axle for my '66 C10 build. I need something to keep axle end play to a minimum to prevent pad knock-back since I won't be using sliding calipers. The other plus would be easy gear changes. I don't know much about them though so what should I look for when ordering a housing or axle kit? I've seen some listed as centered or offset housing- I'm guessing that is to either keep the pinion centered or have matching axle lengths? What are the advantages/disadvantages of each? I'd also like to have about half to one degree of negative camber; do I need to get special hubs/axles to allow that or can normal hubs/axles handle that amount of camber?

Anything else I need to know before ordering?

This is one of the companies I've been looking at.

http://9inchfloater.com/CompleteRrEn...rEnd_28_31.htm