2 chammber is the same as 40 series its the same thing just 2 different names. But the super 40's are totaly different. again i wouldnt buy flows ever again. i had them on my truck and i took them off as i ran 1 tenth slwoer with them on there.
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Dustin
2002 GT Mustang 5-Speed
Drag Radials,Sprayed,Powershifted
 
WOOO HOOOO!
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