the picture from old sub looks like it has a lowering block built in that limits travel. regarding cutting the pitman arm use a chop saw and cut it across the middle. cut just enough to clear the tie rod. remember the tie rod moves as the truck bounces. v grove the cut so you can weld the inside together and allow it to cool before you build up the weld. after its welded put a plate on each side of the pitman arm and weld them in for reinforcement. check and see if a 55-59 truck pitman arm will fit i think they might be shorter

1949 SUBURBAN
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