BRD HNTR can you elaborate, maybe got a pic? The extensions I have are really too short so your idea sounds great. ALso you extended your lower links too didn't you? another good idea I may borrow. While it's apart might as well finish it.
I had replied to this (about time of the last crash), so will try again.
I four linked my rear end and I like the articulation it has. My bottom links are 31+
I think that going to a center frame mount on the lower links would be much better. So to make them very long, you would have to trim off the back corner of the frame where it goes up over the wheels. On 33's I have some surging when changing lanes on freeway at 65+ mph (from road depressions), which I never noticed when on 30" tires. I was playing with the 4 link calculator, trying to see if I could get it any better than what it is. It seems that I may have it set up pretty good, but you can achieve same or better figures with centered lower links.