Different LCA's?

Still doesn't explain why your original arm fits fine. You take a sledge to your K frame and you own it.
Yeah, for sure! Right, does not explain why the strut fits with the original arm. As much as I spent on these new parts, to not have something fit properly is more than frustrating. I considered using my old arm, but the sway bar mounting location is different than the '73 style that I bought that the QA1 arms & K-member require. The reason I went with new K-member & all that is because the car apparently had some front end damage in its earlier life and the front end tech said he had a hard time getting it aligned. The OE K-member was obviously welded due to damage, so why not just give the car a fresh start with new parts? That was my thinking. Everything went together really well except for the driver side strut bar. Ugh.