Adjustable Control Arms: Upper or Lower and Why?

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How bad is the vibe really?? Is there a happy cruise speed where is disappears? We can drive many obstacles not the least of which are issues created by mods.
 
it's pretty bad vibration and makes my satellite dish mount turned iPad mount wobble significantly making the tablet difficult to read a map. Vibe starts at 65 or so and is strong at 75 getting worse at 80. This is in my cruise range and especially troubling for my upcoming east coast trip.
 
I'm looking at the Slee Adjustable Upper Control Arms but I want to replace the poly bushings with OEM rubber. Does anyone know if the OEM bushings will press into these?
rear_arms_upper_250.jpg
 
I'm looking at the Slee Adjustable Upper Control Arms but I want to replace the poly bushings with OEM rubber. Does anyone know if the OEM bushings will press into these?
rear_arms_upper_250.jpg
Quickest way to absolutely know is to call Slee. They should know for sure. ;-)
 
Will call tomorrow but want to order tonight. :)
 
Driveline shop phoned back, my OEM rear shaft splines are OK but the 1.5 year old U-Joints are worn, one fairly badly with some catching. I'm guessing the GRRR ate them? I'm getting 2x new OEM joints and rebalancing for about $300. Metal Tech LCA's on the way, I'll have a rear DC up for sale in late November!
 

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