^Wow. I can't work out if that will move the axle forward 15mm or back 10mm over a stock sierra, but it sounds weird.
Actually 2stroker, I think theres a couple of reasons there is so much confusion (or "denial"

) about RUF.
RUF is not a bolt in mod. People who try and bolt it in end up with a rubbish result - this creates confusion because it looks like there's no reason to do all the work we do when we build RUF.
You can't do a RUF if you can't fabricate to at least some extent.
RUF needs to be considered as part of the whole car build. (i.e tyre size/guard cutting/compression travel desired/lift desired. This is going to be different for different people. If you don't know the importance of these variables for your terrain your'e not ready to RUF.
We're all on the same page here, we're just building cars to do different things. Re drilling hangers and throwing in some longer shackles isn't RUF, it's a mess of poorly considered competing parameters.
Steve.