Holy crap...look what just arrived...that was fast. Might be able to install tomorrow...maybe!
They feel pretty firm but I'm able to get some deflection by hand, especially if I remove the bushings. No idea what the stockers are like til I remove them but will do a comparison.

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2008 AW E88 Auto
Current--AA FMIC
--BMS BEF (w/Cobb), G5 ISO, SLD, CPS, DCIs, & OCC
--M3 FSB & FCAs
--ER OC
--Walbro IFP
--RB PCV
--Whiteline RSFBs
--ER SS brakelines
--Stoptech slotted rotors w/Ferodo pads
--Apex Arc 8s wrapped in Michelin PSS
Future upgrades: Wavetrac LSD
TBD: coilovers