Can't speak for Aaron, but I believe Pedders was recomending bushings be solid poly bushings above 500 RWHP. I was able to easily twist differential around by hand with stock bushings in place which all adds to wheel hop. Can't imagine what 580 RWHP would do... wouldn't be pretty & probably costly. I know one guy ripped his gas tanks up bad  - cradle supposedly has to be dropped to replace the tank too. Pfadt's looks like a better design IMO, unless your partial to red bushings.
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LPE 650+,IOM Pearl White Rallys
860 RWHP 924 RWTQ,TVS2300 10/14 OD 2.75/NW 102mm,RDS/FLOWED "109" SHOT/LPE NCC
NLP spoiler/GM splitter/Torq HE-fans/oil coolers/IC1000cc
Squash twins,GT9,Coil Covers,Mats,Pedals/ADM Gauges,Race Scoop/Trunions
DDS CVs,Carbon F DS/RPM L6/LPE 9.5 3.73/Pedders HD bushes,align kit
RB 2-piece rotors,S/S Lines,Hawk HPE Pads/Forgeline SP3P/Weld RTS
Ceramic ARH 2" LT/3" X-pipe,Corsa Touring/BMR TA,Toe,LCA,DS Loop
StreetSlayer BC3/MTI Shifter-Trans mt/Hotchkis CB/Monster CC/SJM LineLock
PFADT Coil Overs,Sways,Links,Mounts,SF Bushes,Camber Kit
LPE Brotherhood
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