stump - ya got a nice setup, but theres a couple things i noticed that may be an issue down the road, may not depending on how you drive. I ran into similar problems building my suspenion on my 150 from the ground up.
1. be careful welding a flange to the axle housing that receives torque in any way. why? once that axle starts to wrap (even as you're trying to counter act it with the bars) it'll put a stress on that weld, and eventually peel the housing open, causing an oil leak. then go ahead and try to weld it shut with oil seeping out. if you use an anti-wrap bracket (http://www.diy4x.com/images/antiwrap%20bracket.JPG
) make sure it's welded around the entire plate, and the radius of the bracket gets as close to 1/2 the diameter as possible. mine peeled open for that very reason. or lack there of.
2. heim joints. stay away from them. they're inexpensive compared to a super pivot(Super Pivot Bar End | suicidedoors.com
) but you can re-build, service and grease the super pivot. the super pivot won't loosen up like the heims will over time. this isn't so bad with traction bars, you'll notice it more with a 4 link system.
3. Grade 8's. use them everywhere. you'll pay a little more up front, but you'll be thankfull when you don't have to crawl under the truck on the highway at 3am replacing broken suspension nuts and bolts ( that always seem to wander into the tall grass median where you can't find them
for parts, they're pretty good. most of it is for lowered trucks, but some of the parts do an excellent job (super pivots, weld on studs, gussets, etc.) also check out DIY4X: Catering to those who enjoy doing it themselves.