I've talked with many people on this forum personally about their 'half & halfs' as well as full reversal's and most have told me that after driving it for a lil bit, they start to hate it, mainly because of the way braking is affected by it.
And to AnotherS: I'd like to hear your reasoning behind wanting to take a reverse 4 link over a bolt in, forward facing, 4 link. As I've stated in many many other threads, I've had my KP bolt on for over a year and a half now, longer than almost everyone on this board that has one. I've never had a problem with the design or function of the 4 link. And I, as well as 95% of the other people on this board would probably take the bolt in over the reverse.
Since we are on the topic anywho, you see all these reputable companies making forward bolt in 4 links, and then all these shops 'saying' that they've done reverse and half & halfs with NO PROBLEM, then why aren't the reputable companies producing bolt in reverse 4 links? BECAUSE THEY KNOW THE LONG TERM EFFECTS AND HOW IT IS BAD FOR THE SUSPENSION. Just because a 'shop' does it, or a magazine shows it, or a buddy has it, does not by any means mean that it is correct, or the best way to do something.
Sure a reverse link is 'different', to say the least, but IMO, installing, creating, or pushing a reverse 4 link is ignorant, and it just means that you are lazy. It is very easy to install a WELD IN forward 4 link without relocating the gas tank. There are pictures of it on the forum from one of the top installers/vendors/fabricators here, IRSd_mini. Jason as well, do you think that he would create a reverse 4 link, knowing what can happen to a suspension because of it? NO.
My point is, if you really want to do a reverse 4 link, and you think you have the knowledge to do one properly (there is no such thing), then go for it. But I would recommend that you do a little research and find out or look at pictures and determine how to do a forward 4 link. Your truck will thank you years down the road.