4link help

[JasonRPM]

Im beginning to build a triangulated 4 link for my 68 c10 and I have the lower bars already figured out and built but looking at the top bars I have a few concerns and questions. From the center line of the truck what is the ideal angle from my mounting point in the center of the frame to the top of my axel? If I'm running a 3" wide adjustable bushing with a 1" stud on one end and a fixed bushing on the other end with a 2" OD bar can my angle be slightly less than desired since the bars and bushing are that big? And about how far forward from the axel should the bars be mounted? Any help would be appreciated
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