I'm in the process of doing a power steering conversion on my 73 fj40 and have a question? What year of chevy did Jim Vandeven get his steering shaft out of. All of the ones I've come across at the boneyard have a square shaft on them, not a round one. And is there any other tricks I need to know to perform this conversion on my 73. And I'm also doing a soa at the same time, I know lucky me. I'll try to take some pics's and keep you guys posted. Thanks