To get it all set up, I scavenged a box off of a 76 tow truck, but I seem to think that anything will bolt right up until they changed to o-ring fittings in the I think - late 80's?... Just be sure to get the rag joint off of what ever truck you are taking the box from.
Some good reading about steering upgrades here:
http://www.chevelles.com/techref/ftecref29.html
BUT our trucks use a different box than the cars & hence we don’t have the advantage of being able to obtain one from say a Camaro or a Monte SS. I had a high ratio box built for me by AGR & it's a sweet piece. 12.7:1 constant ratio with an aprox .250 torsion bar inside. Takes it from farm truck feel to a modern sport-truck feel. Ya, it was spendy, but worth it. I also put a 1 1/4 sway bar on from the same tow truck & that alone made all the difference by itself.
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passthebuck
#5642
-TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4.
-a 2013 Honda Civic as my "sensible" car