I installed a set of H&R drop springs in my 2009 Challenger R/T. They were junk! I ended up pulling them out and installed a set of Eibachs...
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 Current Pontiacs -
1973 Formula SD455 - #'s auto orig paint
1975 Trans Am - 4 speed 37k orig miles
1996 Trans Am WS6 - 25k orig miles
'66 GTO convertible - black plate car orig paint
1966 2+2 convertible - 421 4bbl automatic
1967 Grand Prix - orig paint 4 speed
a 67 El Camino.. '70 SS454 Chevelle, 2 '66 Corvettes and a 21 Scat Pack
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