fmic question

kw90supercoupe

Registered User
So i was going to order a fmic i see that alot of people were using 31x12x3 and wanted to know if that is the best size and will handle plenty of overdrive from blower and will a 4in thick will fit without cutting anything out. Also 3in tubes or 2.75. Anybody have a diagram or number of bends so i know how much pipe to order.
 
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