Has anyone ever installed either of theis axles? I'm going to start building up my 84 gmc, I will most likely use one ton axles because of money restraints but i'm currious as to these big axles and whats involved.

I have two buddies of mine that have em. Pretty bad ass setup. There is acouple of companies that sells all the stuff to put em under trucks (spring mounts, brakes, adopters, ect) Ill get up with one of them and get that website. Im going to put a set under my '78 K10. There is a few guys on here also running Rockwells.

kool any info is appreciated.

Get either one and if you can break them you are a bad (*^.
Should be more then strong enough to support anything your going to put thru it.
If you do some searching their are several companies that sell the axles and parts.
Would be worth while if you can afford it.