Since I have to disassemble my front suspension to install my Koni FSDs, I figured now would be a good time to replace the control arm bushings. Both Alta & PowerFlex make bushings adjustable for caster. I'm looking for opinions — by those who've actually used them — as to which is better. Also, does anyone make adjustable MacPherson strut top plates?

 

For sure the Powerflex is a much better option as I've never had an issue with any of them. But can't say that about the Alta as I can't tell you how many sets of the psrs ones I've had to replace do to coming loose. Heck I have a worn out set sitting on my press right now.
Also the Powerflex is on sale right now making them even better.
https://www.waymotorworks.com/powerf...shing-kit.html