Stop lookin at pictures of other people's **** and spend 3 min's looking at YOUR chassis. Your killin me over here Lay laughing1
Everything your guessing / assuming and over thinking is already done, all you have to do is look at YOUR chassis and build off of what is already there. The tabs are on your chassis, hell you have half the links for it already. Go look at it , all the answer's are right there kicking you in the balls.
**** , now I gotta go find the pics I took of your chassis to see if I can figure it out for your silly ass....
Things I know without even looking at it :
Jimmys4x4 Chassis that has tabs already welded to the chassis
They typically do straight uppers out back and very heavily triangulated lowers ( ALA Caddishacks rig since its almost an identical chassis )
You have some if not most the links already that you bought with the chassis
You have 3/4x3/4 heims for the uppers and 3/4 x 7/8 for your lowers..
You match the tabs and set seperation at the axle and your suspension will fall into place since its already "pre-engineered" from the original build/purchase of your chassis.
This thing should be a roller next week if it is designed suspension wise the way all the other Jimmy's chassis are and I get your tabs/towers in ASAP. ( which you have paid for already so that wont be a problem , thank you for dropping off the monies to the wife last night.. )
Stop trying to make this a hard process man, take a deep breath grasp the fact that this is about as straight forward a build as you can get compared to what you were trying to do with the Rockwells and lets get this bish on the trails SON