he's being polite, its not even close to a thread hijack though, still on the main topic of sleeves.
sleeving a d30 is 5%er stuff, and for prerunner folk who just cant have enough rigidity.
i wouldnt worry about it if the axle is truss'd and all that, but if your building your own axle, and want to sleeve it, why not add a little extra strength to protect your investment?
its not for everyone, i agree. if your the type to beat the shit outta your jeep, the d30 isnt for you.... your probably allready planning a 60, etc..... jeepspeeders cannot run a d60 due to weight problems..... so we have no choice but to work with what weve got.