awesome post by 63genIII here which I think may help you out:
http://67-72chevytrucks.com/vboard/s...ng+swap+thread
I'm in a similar boat myself with my 64 k10 regarding trying to do something with my suspension...
consensus of the experienced members of the boards seem to be to upgrade to newer generation chev/gmc 4x4 suspension springs which requires using that generations matching spring hangers...
http://67-72chevytrucks.com/vboard/s...d.php?t=648334
and
http://67-72chevytrucks.com/vboard/s...d.php?t=790147
or there is also the possibility of getting springs made to order from a local spring shop (here in Calgary, we have a great place called Standens) that can re-arch or make custom lengths...
what I'm hoping is getting springs made that will utilize the stock hangars, but incorporate bolt on bushing style spring eyelets... dunno if its possible I'm going to find out from them if they can do it...
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1964
K10 shortbox Stepside
383 sbc stroker under vortec heads
sm420 trans / t221 tcase / corp 10 front axle / corp 12 rear axle / 3.73 gears
rolling on 33x12x15 tires on 6 lug rims.