that is flat out ghetto......steering angles are all messed up, no caster and I bet its a handfull to drive.
the reason that worked on that truck(wellI guesss you can call it worked) IS cause its a mid 60's-79 truck with equal lenth beams.And the beams have a kick as you can see at the end of the beams.(right before the kingpin)
The ranger is un-equal lenth, you have a short and long beam.and the ends do not "kick" at the ends like the old equl lenth beams.
besides if you just flip the beams the only thing that going to be holding the beams to the psindles is going to be the lower now upper ball joint nut.not the ball of the ball joint.and that would be very dangerous.
If you want to lift your truck more than a couple of inces around 4inches look in to bent beams or just get some drop brackets to correct camber from the taller springs.
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Only the 89 and newer ranger,bronco2, f150's etc have the "do not bend/weld" casted in to them.As they are "cast" beams. every ford 88 and older has forged beams.
The reason this was casted in to them, is cause back in the day 81 and older f series trucks to aline them they had to bend the beam as there was no adjustment in the kinpins.
Once the beams went to ball joints they had adjusment.but soem old timers proably never caught up on that and ford to save thier ass, proably thougth it was a good ieal to cast that in to the beam.So joe the aligment guy didnt bend the beams like he always had then 50 miles down the road the beam snap and for get sued.
Truth is, the cast beams can be bent and weld on.But you realllllyy have to know what your doing.