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Measuring is the easy way. I think mine are like 14" longer than the stock arms. I do have a few pics at SFO. There is little room to mount the stock brackets due to the front-cab body mount. JSM84
It was easier to mount the radius arm to the axle I-beam, then mark and drill the holes for the bracket attached to the end of the arm. Keep a close check on your CASTER, esp. with dual shocks, since there's no adjustment and the mounting of the brackets will affect that. You want the coil spring straight, or it will hit one or both shocks and your alignment will be off.
It was easier to mount the radius arm to the axle I-beam, then mark and drill the holes for the bracket attached to the end of the arm. Keep a close check on your CASTER, esp. with dual shocks, since there's no adjustment and the mounting of the brackets will affect that. You want the coil spring straight, or it will hit one or both shocks and your alignment will be off.
