Doesn't the size of the through bolt only get larger with the larger heims so it doesn't effect the rotational twist? It should twist the same as a smaller heim, unless I am totally off on this. I really don't know much about this stuff, I just listen when people tell me what works. I spoke with my friend Jason (shop foreman at my friend Marc's off-road shop), who used to own an Explorer until he went to the dark side and bought a J#$p. He says that heims are the way to go with radius arms because it allows so much more movement. It also makes it easier to go with coil-overs later cause that part is already finished. I got the same information from the fabricator, Brian. I should get a few more inches of down travel out of this as well. Can't get anymore up travel cause of clearance and binding (my u-joints bind and the right side I-beam mount rubs on the diff housing) issues.
Maybe I will just go with the 1" heims instead. They use a smaller ID weld in sleeve (1-1/2 instead of 1-3/4). It might be easier all the way around. On second thought, I will just drop it off at my friends house and let him figure it out. He built his front suspension from scratch for his 2wd Toyota pickup and its awsome. He used heims on all the A arms and steering arms, then tore it all out and made J arms for it cause he liked the geometry better. He flipped it end over end last month and the only thing damaged was a bent steering arm, which he fixed back at camp. The only thing left stock on his truck is the frame and the cab, minus the roof. This 18 yr old kid is really talented. He lives in Vista, which is in north San Diego county and charges $25.00 per hour if anyone is interested. He only charges for the time he works on the trucks, not for the time he spends figuring out how to do the work.